Question

How can you use unit rates to solve pricing problems?​

Answer 1

a ratio is a comparison of two numbers or measurements

the objects being compared are called the terms of the ratio.

if the tow terms are different units this is called a rate.

example:

David covers 600 miles in 8 hours and John covers 380 miles in 5 hours. Who is driving faster ?

solution:

Distance covered by David in 1 hour is

= 600 / 8

= 75 miles per hour

Distance covered by John in 1 hour is

= 380 / 5

= 76 miles per hour

When we compare the above unit rates (Distance covered in 1 hour), John is driving faster than David.

Answer 2

We can use unit rates to solve pricing problems because we solve for price of one of that item.

For example, David bought 5 pounds of peanuts for $10, how much does it cost for one pound?

10 / 5 = $2 per pound

The $2 is the unit rate and we use to find if David buys more then 10 pounds.

Best of Luck!