Question

Ella bought 8 meters of ribbon for $10.

How much does the ribbon cost per inch?

(1 in = 2.54 cm) Round your answer to the nearest

hundredth.

Answer 1

$0.03 per inch

Explanation:

We need to convert 8 meters to inches first.

Unit ratio for meters to cm is:

`(1m)/(100cm)`

So 8 meters is 800 cm

Now,

we need to convert 800 cm to inches

Unit ratio for cm to inches is:

`(2.54cm)/(1inch)`

So, 800 cm is :

`(800)/(2.54)=314.96`inches

To get costing per inch, we divide total cost ($10) by the total number of inches (which is 314.96):

`(10)/(314.96)=0.032`

Rounded to nearest hundredth, $0.03 per inch