The chart shows the power ratings of 3 clothes dryers and the time needed to dry a load of 10 towels.
power/time
x/4,370/25
y/4,420/22
z/4,150/26

What is the difference in energy used between the dryer that uses the greatest amount of energy and the dryer that uses the least amount?

12010

Explanation:

Given:

power    time

4,370     25

4,420     22

4,150      26

To find: difference in energy used between the dryer that uses the greatest amount of energy and the dryer that uses the least amount

Solution:

Energy = power × time

For clothes dryer x:

energy = 4370 × 25 = 109250

For clothes dryer y:

energy = 4420 × 22 = 97240

For clothes dryer z:

energy = 4150 × 26 = 107900

Dryer x uses the greatest amount of energy and dryer y uses the least amount of energy.

Difference in energy used between the dryer that uses the greatest amount of energy and the dryer that uses the least amount = 109250 - 97240 = 12010