math
posted by Jennifer .
Allan borrowed $4800 from his father to buy a car. He repaid him after 9 months with interest of 5% per year. Find the total amount he repaid.

I think the answer is $5040.00

How did you get that answer?

4800/9=533.33x5%=266.665
4800+240=5040.00 
Thanks.
The correct way is to use this formula.
Interest = principal * rate * time
I = 4800 * 0.05 * 0.75
I = 180
4800 + 180 = 4980 
thank you!

You're welcome.