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Magazine Problem 21
Write the percent proportion. \(10 \%\) of 120 trees is 12 trees.
Problem 21
Anne borrowed 4500 dollar from a bank that charges \(10 \%\) simple interest. If she repays the loan in \(2 \frac{1}{2}\) years, how much will she have to pay back?
Problem 23
If a bank compounds interest semiannually for 3 years, how many total compounding periods are there?
Problem 24
Write the percent proportion. 21 dogs is \(20 \%\) of 105 dogs.
Problem 24
If a bank compounds interest quarterly for 2 years, how many total compounding periods are there?
Problem 26
To pass an exit exam, a student must pass a 60 -question test with a score of \(80 \%\) or better. What is the minimum number of questions she must answer correctly?
Problem 28
The amount of 8000 dollar is invested at \(4 \%\) for 3 years. a. Compute the ending balance if the bank calculates simple interese? b. Compute the ending balance if the bank calculates interest compounded annually. c. How much more interest is earned in the account with compound interest? (TABLE CAN NOT COPY)
Problem 28
Change the percent to a simplified fraction or mixed number. $$110 \frac{1}{2} \%$$
Problem 28
A salesperson receives a weekly salary of \(\$ 100,\) plus a \(5.5 \%\) commission on sales. Her salary last week was \(\$ 1090 .\) What were her sales that week?
Problem 30
The amount of 12,000 dollar is invested at \(8 \%\) for 1 year. a. Compute the ending balance if the bank calculates simple interest b. Compute the ending balance if the bank calculates interest compounded quarterly. c. How much more interest is earned in the account with compound interest? (TABLE CAN NOT COPY)
