Marie worked 40 total hrs on two jobs. She worked 21/2 hrs on the first job on MON, 3 7/8 hrs on TUES, 5 hrs each on WED and THR, and 6 1/4 hrs on FRI. If the rest of her time was spent on the second job, how many hours did she work on the second job?

Answer 1

2 1/2 + 3 7/8 + 5 + 5 + 6 1/4 = 22 5/8
so now just subtract that from the 40 total hours worked.