Question

7. Eduardo has $150 in savings and makes $9.75 per hour. Jennifer has $90 in savings and earns $15.25 for each

hour worked. They work together for the same number of hours, and they each save all of the money they earn.
Jennifer wants to know how many hours she has to work to have the same amount in savings as Eduardo.
a. Write an equation that can help Jennifer.
b. How many hours does Jennifer need to work to have the same amount in savings as Eduardo? Round to the
nearest hundredth.

Answer 1

a) 150-90 = h(15.25 -9.75)

b) 10.91

Explanation:

a) Jennifer has 150 -90 = 60 less in savings than Eduardo, but she is earning 15.25 -9.75 = 5.50 more per hour. An equation she can use to figure her hours is ...

60 = 5.50h . . . . for h hours worked.

In 'raw' form, that might be ...

150 -90 = (15.25 -9.75)h

__

b) Solving the above equation, we get ...

60/5.50 = h ≈ 10.90909 ≈ 10.91 . . . hours