Dante deposits $5000 into a savings account which earns simple interest.
No deposits or withdrawals are made from this account.
After 4 years, Dante notices there is $5600 in the account.
What is the annual rate of interest for the account?
% |
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Dante deposits $5000 into a savings account which earns simple interest.
No deposits or withdrawals are made from this account.
After 4 years, Dante notices there is $5600 in the account.
What is the annual rate of interest for the account?
% |
`3text(%)`
`text(Interest per year)` | `= (5600 – 5000)÷4` |
`= 600 ÷ 4` | |
`= $150` |
`:.\ text(Interest rate)` | `= 150/5000 xx 100` |
`= 3 text(%)` |
Cassie opens a savings account and deposits $900 into it.
She makes no more deposits and earns simple interest on her original deposit at 3.5% each year.
How much interest will Cassie earn after 4 years?
$ |
`$126`
`text(Interest earned)` | `=Prn` |
`= 900 xx 3.5/100 xx 4` | |
`= $126` |
Mr. Soros put $500 into a simple interest account for a year.
He did not take any money out or add any money to the account.
At the end of the year he had $530 in the account.
What was the annual percentage interest rate?
% |
`text(6%)`
`text(Interest earned)` | `= 530 – 500` |
`= $30` |
`:.\ text{Interest rate (annual)}`
`= 30/500`
`= 0.06`
`= 6text(%)`