please helpppp!!!!!!!!!!!
- Zach borrowed 4,000 from his grandfather to buy a used car so he could travel to and from work. After working for 2 years, he has saved 5,200 to pay back to his grandfather. At what interest rate did Zach borrow the money? Round to the nearest whole percent.

Question

please helpppp!!!!!!!!!!!
- Zach borrowed 4,000 from his grandfather to buy a used car so he could travel to and from work. After working for 2 years, he has saved 5,200 to pay back to his grandfather. At what interest rate did Zach borrow the money? Round to the nearest whole percent.

anonymous · Answer

5200/4000=x/100

520000=4000x
130=x


not sure on that thugh