math
posted by yaneth on .
Liam borrowed a sum of money from his parents as an interest free loan to help him pay college. We know that 6 months into the loan,owned 17,900 and that 15 months into into the loan he owned 14,750.
1. What is the original amount?
2. How long will it take to pay back?
Please help i'm having trouble with this 2 questions

how to change improper fraction 31/6 to a mix nember or a whole number