Question

Zach borrowed four thousand dollars from his grandfather to buy a used car so he could travel to and from work. After working for 2 years, he has saved four thousand seven hundred twenty dollars to pay back to his grandfather. At what interest rate did Zach borrow the money?

Answer 1

eight percent

nine percent

fifteen percent

forty-two percent

Answer 2

one sec.

Answer 3

Google this question open study has it alot...my computer isn't loading sorry...

Answer 4

k thanks any way

Answer 5

sorry man!

Answer 6

I = PRT
I/PT = R
720/(4000)(2) = R
720/8000 = r
.09 = r
9% = r

Answer 7

thank you

Answer 8

no problem :)