Question

Mallory makes $10 per hour babysitting and $8 per hour working at the local grocery store. Last week she babysat for 6 hours. Her total gross earnings for both jobs was $180. How many hours did she work at the grocery store?

Answer 1

The equation is 10(6)+8x=180. when you solve for this you get x=15hours

Answer 2

10x6=60 so 180-60=120 and 120 divided by 8 is 15 so the answer is 15 hours