6. Self-Test
Answers to the questions are available at the end of the book.
- Calculate the missing values indicated by a question mark in the table below:
Question Percents Decimals Fractions
(or mixed numbers)
in lowest termsa. [latex]\displaystyle{10\frac{3}{5}\%}[/latex] ? ? b. ? 2.25 ? c. ? ? [latex]\displaystyle{\frac{1}{400}}[/latex] d. [latex]\displaystyle{\frac{1}{2}\%}[/latex] ? ? e. ? 0.002 ? f. ? ? [latex]\displaystyle{\frac{53}{200}}[/latex]
- a. What percent of $30 is $3.75?
b. 22.5% of $1,500 is how much?
c. $75 is 15% of what number? - Colton’s store expenses for the month of July and August were $33,480 and $36,580, which were 110% and 90% of the budgeted expenditure for the months of July and August, respectively. Calculate the total budgeted expenses for the two months.
- Sandra earns an annual salary of $60,000. Every month, she spends $1,400 on rent, $600 on car expenses, $200 on loan repayment, $800 on miscellaneous expenses, and saves $2,000.
- What percent of her annual salary is her annual expenses?
- If she invests 25% of the $2,000 savings in a mutual fund every month, what percent of the annual salary is invested in the fund over the year?
Unless otherwise indicated, this chapter is an adaptation of the eTextbook Foundations of Mathematics (3rd ed.) by Thambyrajah Kugathasan, published by Vretta-Lyryx Inc., with permission. Adaptations include supplementing existing material and reordering chapters.
