91Ó°ÊÓ

Find the total amount in each compound interest account. \(\$ 2000\) is compounded semiannually at a rate of \(8 \%\) for 5 years.

Solve. 0.5 is \(5 \%\) of what number?

Solve. If necessary, round money amounts to the nearest cent and all other amounts to the nearest tenth. See Examples 1 through 4. A banker learned that \(\$ 842.40\) is withheld from his monthly check for taxes and insurance. If this represents \(18 \%\) of his total pay, find the total pay.

Write each percent as a fraction or mixed number in simplest form. $$ 2 \% $$

Find the amount of discount and the sale price. $$ \begin{array}{|c|c|c|c|c|} \hline \text { Original Price } & \text { Discount Rate } & \text { Amount of Discount } & \text { Sale Price } \\ \hline \$ 89 & 10 \% & & & \\ \hline \$ 74 & 20 \% & & & \\ \hline \$ 196.50 & 50 \% & & & \\ \hline \$ 110.60 & 40 \% & & & \\ \hline \$ 410 & 35 \% & & & \\ \hline \$ 370 & 25 \% & & & \\ \hline \$ 21,700 & 15 \% & & & \\ \hline \$ 17,800 & 12 \% & & & \\ \hline \end{array} $$

Solve. 7.4 is \(5 \%\) of what number?

Solve. \(150 \%\) of 430 is what number?

Find the total amount in each compound interest account. \(\$ 2000\) is compounded quarterly at a rate of \(8 \%\) for 5 years.

Find the amount of discount and the sale price. $$ \begin{array}{|c|c|c|c|c|} \hline \text { Original Price } & \text { Discount Rate } & \text { Amount of Discount } & \text { Sale Price } \\ \hline \$ 89 & 10 \% & & & \\ \hline \$ 74 & 20 \% & & & \\ \hline \$ 196.50 & 50 \% & & & \\ \hline \$ 110.60 & 40 \% & & & \\ \hline \$ 410 & 35 \% & & & \\ \hline \$ 370 & 25 \% & & & \\ \hline \$ 21,700 & 15 \% & & & \\ \hline \$ 17,800 & 12 \% & & & \\ \hline \end{array} $$

Solve. If necessary, round money amounts to the nearest cent and all other amounts to the nearest tenth. See Examples 1 through 4. An owner of a repair service company estimates that for every 40 hours a repairperson is on the job, he can bill for only \(78 \%\) of the hours. The remaining hours, the repairperson is idle or driving to or from a job. Determine the number of hours per 40 -hour week the owner can bill for a repairperson.