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

(gross earnings) - (baby sitting hours)(baby sitting hourly rate) should give the total amount earned by working at the grocery store

from there, divide by the hourly grocery store pay to get the # of hours worked at the grocery store