Question

after earning interest the balance of an account is $420 the new balance if 7/6 of the original balance how much interest did it earn

Answer 1

....the new balance with interest = 7/6 of the initial balance

x= the initial balance

420= 7x/6

420*6 = 7x

2560=7x

x=360

starting balance $360

he won: $60 interest

Explanation: