Question

During the summer, Heather has a two part-time jobs. She earns $7 an hour as a life guard and $10 an hour as a tutor. This week, Heather works for a total of 35 hours. If Heather earns $290 in a week, how many hours does she work at each job?

Answer 1

she works 15 hours as a tutor and 20 hours as a life guard.

Explanation:

life guard: $7 x 20=140$

tutor: $10 x 15= 150$

140+150=290 dollars

20 + 15=35 hours

Answer 2

Explanation:

Lifeguard=x

tutor=35-x

7x+10(35-x)=290

7x+350-10x=290

-3x=-60

x=20 hours as a lifeguard ($140)

35-x=15 hours as a tutor ($150)

adds to $290.

Hope that helps! :)