Question

Last month, Sheldon earned $12.80 in interest on a $320 deposit into his bank account. If the interest earned is directly proportional to the amount deposited, how much interest can Sheldon expect next month if he deposits $830?​

Answer 1

the answer is $487.20 if he expects to deposits $830

Answer 2

`x=\$ 32.20`

Explanation:

`(12.80)/(320)=(x)/(830) \therefore 320x=830*12.80`

`x=\$ 32.20`