Totally irrelevant, but help me :)

[cska80]

Yeah, topic says it all. You're all smart cookies and I suck at math, so...

If it took me 45 minutes to do 4 miles, what was my average MPH?

 

[SLSteven]

5 1/3

 

[cska80]

Haha, thanks. I knew I could count on EconRPF'ers.

 

[MelissaWV]

Yeah, topic says it all. You're all smart cookies and I suck at math, so...

If it took me 45 minutes to do 4 miles, what was my average MPH?

You got the right answer already, but I figured I'd post how:

n (variable; miles) / 60 (minutes in an hour) = 4 miles / 45 minutes

This means that:

60x4 = 45n

Which also means that:

240 = 45n

And that:

240/45 = n

Or, more simply:

5 1/3 = n

So...

5 1/3 miles per 60 minutes (one hour) = 4 miles per 45 minutes

 

[specsaregood]

5 1/3

Did you get into trouble as a kid in school for not showing your work? I did.

4mile/45min = 0.089 mile/min.
.089 * 60min = 5.34mile/hr.

edit: melissa obviously didn't get into trouble for not showing her work!

 

[MelissaWV]

Did you get into trouble as a kid in school for not showing your work? I did.

4mile/45min = 0.089 mile/min.
.089 * 60min = 5.34mile/hr.

Or the way shorter, non-Algebraic way

 

[sevin]

There's a new invention... it's called a calculator. Google it.

 

[specsaregood]

Or the way shorter, non-Algebraic way

Yes, well I also often got into trouble for not doing things the "correct" way, even if I got the right answer. Mostly because I didn't pay attention in class, but was still able to break things down and figure them out on my own and get the right answer.

 

[Bruno]

There's a new invention... it's called a calculator. Google it.

can you get those in stores too, or just on the interwebs?

 

[SLSteven]

Did you get into trouble as a kid in school for not showing your work? I did.

4mile/45min = 0.089 mile/min.
.089 * 60min = 5.34mile/hr.

edit: melissa obviously didn't get into trouble for not showing her work!

I was trying to save paper for Bernanke's future money printing.

 

[MelissaWV]

There's a new invention... it's called a calculator. Google it.

If you don't know how to figure it out, the calculator is not going to tell you.

 

[Jordan]

If you don't know how to figure it out, the calculator is not going to tell you.

Lies!

http://www.wolframalpha.com/input/?i=4+miles+in+45+minutes+=+x+mph

Thanks to WolframAlpha you don't have to know anything.

 

[MelissaWV]

Lies!

http://www.wolframalpha.com/input/?i=4+miles+in+45+minutes+=+x+mph

Thanks to WolframAlpha you don't have to know anything.

I stand corrected, even though you still have to reduce 16/3.

This is probably why when the power goes out, cashiers can't do simple math to give you change.

 

[Jordan]

This is probably why when the power goes out, cashiers can't do simple math to give you change.

LOL

I've always wondered if cash registers show you how many of each coin to give back as change?

 

[MelissaWV]

LOL

I've always wondered if cash registers show you how many of each coin to give back as change?

No, but a lot of them dispense the (coin) change automatically now.

You used to pick up basic things as a cashier... it doesn't seem to be the norm anymore.

$0.41 = one of each basic coin

$100 = starting stack in the morning, should consist of:

2 x $20 = 40
2 x $10 = 20
2 x $5 = 10
23 x $1 = 23
16 x Q = 4
17 x D = 1.70
21 x N = 1.05
25 x P = 0.25

40+20+10+23+4+1.7+1.05+.25 = 100

One come in stacks of 50.
Quarters come in rolls of $10
Dimes come in rolls of $5
Nickels come in rolls of $2
Pennies come in rolls of $0.50

A full round is $67.50.

Half dollar rolls are $10, but you will never buy one out as a cashier. You might, however, get paid in rolls of half dollars.

A half round (coins only) is $17.50; most cashiers will just give the office staff a $20 and accept the additional 2 singles and roll of pennies.

Cashiers should always use the "tare" function when weighing your bagged produce or salad bar items. Watch their fingers. If they aren't doing this, you're paying for the weight of the bag/container at the per pound price of the produce you bought. It adds up.

BOGO deals don't post until the "TOTAL" button is hit by the cashier. Don't go crazy if they don't seem to be posting; if your cashier is new, you will confuse them to hell and they will delay your whole trip.

The PLU for obscure produce is right there on those stickers. Plantains are 4035, while bananas are 4011. Regular tomatoes are 4151. Know what it is you bought, and keep an eye on the screen. One kind of apples might be on sale, and another could be triple the price. If the cashier doesn't know the difference, you could be charged double or triple what you should be.

And so on

I think the machines do 99% of the work now, and people have gotten so desperately sloppy... I bet the stores are making such a killing.

 

[heavenlyboy34]

No, but a lot of them dispense the (coin) change automatically now.

You used to pick up basic things as a cashier... it doesn't seem to be the norm anymore.

$0.41 = one of each basic coin

$100 = starting stack in the morning, should consist of:

2 x $20 = 40
2 x $10 = 20
2 x $5 = 10
23 x $1 = 23
16 x Q = 4
17 x D = 1.70
21 x N = 1.05
25 x P = 0.25

40+20+10+23+4+1.7+1.05+.25 = 100

One come in stacks of 50.
Quarters come in rolls of $10
Dimes come in rolls of $5
Nickels come in rolls of $2
Pennies come in rolls of $0.50

A full round is $67.50.

Half dollar rolls are $10, but you will never buy one out as a cashier. You might, however, get paid in rolls of half dollars.

A half round (coins only) is $17.50; most cashiers will just give the office staff a $20 and accept the additional 2 singles and roll of pennies.

Cashiers should always use the "tare" function when weighing your bagged produce or salad bar items. Watch their fingers. If they aren't doing this, you're paying for the weight of the bag/container at the per pound price of the produce you bought. It adds up.

BOGO deals don't post until the "TOTAL" button is hit by the cashier. Don't go crazy if they don't seem to be posting; if your cashier is new, you will confuse them to hell and they will delay your whole trip.

The PLU for obscure produce is right there on those stickers. Plantains are 4035, while bananas are 4011. Regular tomatoes are 4151. Know what it is you bought, and keep an eye on the screen. One kind of apples might be on sale, and another could be triple the price. If the cashier doesn't know the difference, you could be charged double or triple what you should be.

And so on

I think the machines do 99% of the work now, and people have gotten so desperately sloppy... I bet the stores are making such a killing.

I love it when you speak nerd-ese. My heart is all a-flutter. I'm so in lust with ya. lolz

 

[specsaregood]

//

 

[MelissaWV]

I take it they don't have little machines in the produce section for the customers to weigh and print out the scannable price tag in your neck of the woods yet? I always weigh/tag all my produce myself.

They used to not, when I worked as a cashier. Do those machines let you take the tare weight off yourself? Are the scales accurate? (For self-check lines, which I have been through, I always take the produce out of the bags or containers before typing in the codes because they DON'T let you tare the weight off.

I guess working there is part of what made me like the farm stands so much. "You want three of those? Hmmm let's say a dollar, then."

 

[brandon]

Yeah, topic says it all. You're all smart cookies and I suck at math, so...

If it took me 45 minutes to do 4 miles, what was my average MPH?

Usually with basic arithmetic/algebra there are little tricks you can do to easily calculate the answer in your head, or at least a very close estimate.

Just think about it like this. 45 minutes is three quarters of an hour. And you went 4 miles in 45 minutes, which means you went one and a third mile every 15 minutes. Now just multiply that by 4 to figure out you would have went 5 1/3 miles in in hour, or 5.33 mph

 

[MelissaWV]

Usually with basic arithmetic/algebra there are little tricks you can do to easily calculate the answer in your head, or at least a very close estimate.

In this case, ignore all the calculations people posted. Just think about it like this. 45 minutes is three quarters of an hour. And you went 4 miles in 45 minutes, which means you went one and a third mile every 15 minutes. Now just multiply that by 4 to figure out you would have went 5 1/3 miles in in hour, or 5.33 mph

Just because you don't type it out, doesn't mean you didn't use equations/calculations. I didn't have to type all that out to figure out the answer, but I felt it'd be more helpful to post some kind of methodology rather than just the number itself.