# Chxrlix

#### Percentages

Tom deposits \$10000 in a bank. The interest is compounded half-yearly. After one year, he receives an amount of \$10609.
a) Find the annual interest rate.
b) If Tom deposits the amount for one more year, find the total interest that he will get.

## 解答 0

• eric
2019-10-01 20:48:24
a. Solve 10000(1+r/2)^2=10609, where r is the rate in question
• Kms
2019-10-01 20:50:33
a) 10000(1+(r/2))^2=10609, find r b) 10000(1+(r/2))^4 (use result of r in(a))

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