Question

Sarah is starting a new job.

The first payment is $300 and every book sold she gets $5 per book. The second payment is $450 and $2 per book sold. How many books will it take for both payments to be pay the same amount?

Answer 1

solve this equation:
300+5x=450+2x
3x = 150
x = 50
so the answer is 50 books