Lee worked a total of 30 hours at two jobs last week. her combined pay from the jobs was $240. she earned $9 per hour working at the movie theater and $6 per hour working in her aunt's store. how many hours did she spend working in her aunt's store last week? define variables, set up a system, and solve.

10 hours

Explanation:

Let x be the number of hours Lee spent in working at the movie theater and y be the she spent in working in her aunt's store.

Given : Lee worked a total of 30 hours at two jobs last week.

Also, Her combined pay from the jobs was $240. She earned $9 per hour working at the movie theater and $6 per hour working in her aunt's store.

Then the required system of equation will be

     (1)

     (2)

Divide equation (2) by 3 on both sides

    (3)

Multiply 2 to the equation (1) on both sides , we get

  (4)

Eliminate equation (4) from (3), we get

Put x= 0 in (1), we get

Hence, she spent 20 hours in movie theater and 10 hours in her aunt's store last week.

mauve company permits employees to occasionally use the copying machine for personal purposes