How to solve: a parade traveled 4 miles in 2 hours. how far did tge parade travel per minute?

Since there is 120 minutes in 2 hours, you would divide 4/120 which would be simplified to 1/30.

Therefore, the parade traveled 1/30 miles per minute or 0.03 (a bar notation on 3) miles per minute.

There's a really easy way to convert any units to other units.

Right now, we have the fraction (4 miles) / (2 hours).

We want to find a fraction that's exactly equal to that one,

but has the units of (miles/minute) or maybe (feet/minute).

Just take the original fraction, and multiply it by some other

fractions.

Each fraction you multiply it by must have the value of ' 1 ' so

you don't change the value of the original fraction. But it can

have different units, that cancel with other units to eventually

give you the units you want.

(4 miles / 2 hours) times (1 hour / 60 minutes)

The second fraction is equal to ' 1 ', because the top and the bottom

have the same value ... 1 hour is the same thing as 60 minutes.

Multiply the fractions: (4 miles x 1 hour) / (2 hour x 60 minutes)

Now you can cancel 'hour' from the top and the bottom, and you have

(4 miles x 1) / (2 x 60 minutes)

= (4 miles) / (120 minutes)

= (4 / 120) mile/minute = 0.0333 ... mile / minute.

Let's do it again, go a little farther, and get an answer that

might mean more and feel more like an answer.

(4 miles) / (2 hours) x (5280 feet / mile) x (1 hour / 60 minutes)

The 2nd and 3rd fractions both have the value of ' 1 ', because

the top is equal to the bottom.

Multiply all three fractions:

(4 miles x 5280 feet x 1 hour) / (2 hours x 1 mile x 60 minutes)

You can cancel both 'mile' and 'hour' out of the top and bottom,

and look what you have left:

(4 x 5280 feet x 1) / (2 x 1 x 60 minutes)

= (4 x 5280) / (2 x 60) feet / minutes

= (21,120 / 120) feet/minute = 176 feet per minute