Terry has completed 15 homework problems, and Susan has competed 9. Terry is completing 10 problems per hour and Susan is competing 12 problems per hour. After how many hours will terry and susan have completed the same number of problems ??

Answer 1

terry = 15 + 10 t
susan = 9 + 12 t

so
15 + 10 t = 9 + 12 t

2 t = 6
t = 3 hours

Answer 2

@damon so 3 hours ?

Answer 3

Yes, but figure out why.

Answer 4

Um because at 3 hours they have the same amount of problems done.

Answer 5

Exactly

Answer 6

@damon thank you

Answer 7

The answer is 10 hours got 100%