Math 37 – Zambrano
Mock Exam # 5
1. Simplify the following.
a.
c.
b.
(Round your answer to the nearest hundredth)
2. Evaluate.
a.
b.
3. Arrange the set of decimals, from smallest to largest:
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Mock Exam # 5
Math 50D – Zambrano
4. Complete the following table.
Decimal
In English
Fraction
Percent
Twenty three
hundredths
5. Are the following fractions equivalent? Show why or why not? Is the equation a proportion?
Explain Why?
6. Solve the following proportions.
a.
b.
c.
d.
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Mock Exam # 5
Math 50D – Zambrano
e.
f.
7. Construction-grade lumber costs $384.50 per 1,000 board-feet. What will be the cost of the
686 board-feet? Round your answer to the nearest cent.
8. A tire shows in. of tread wear after 32,000 mi. assuming that the rate of wear remains
constant, how much tread wear would you expect the tire to show after 48,000 mi?
9. How much interest will you earn if you place 300 into an account that earns a
interest for 2 year?
simple
10. Solve each percent problem.
a. What is 35% of 600?
b. 7% of what number is 42?
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Math 50D – Zambrano
Mock Exam # 5
c. 500 is what percent of 1,500?
11. Discount A kitchen store offers an All-Clad saucepan on sale for $92. The saucepan
normally sells for $115. What is the discount rate?
12. Percent Decrease The population of a town decreased 15% in a 3-year period. If the original
population was 12,000, what was the population at the end of the period?
13. Percent Increase Enrollment at a school increased from 800 to 888 students from a given
year to the next. What was the rate of increase?
14. An Olympic swimming pool holds around 672,000 gallons of water. Assuming the pool can
be drain at the speed of 2000 gallons per hour. How long it take for the swimming pool to be
completely drained?
a. How many gallons will 50% of the pool be?
b. How many gallons will 75% of the pool be?
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Math 50D – Zambrano
Mock Exam # 5
c. What percentage is 134,400 gallons of the pool?
14. Find the following ratios.
a. What is the ratio of 6 minutes to 6 hours?
b. The ratio of Olga’s classical CDs to her rock CDs is 14 to 25.
c. There are 16 ducks and 9 geese in a certain park. Express the ratio of ducks to geese. Write
your answer in 3 different ways.
d. Find the ratio and simplify. In this triangle, find the ratio of the shortest side to the longest.
e.
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Math 50D – Zambrano
Mock Exam # 5
15. Sarah is buying jellybeans for her best friend’s birthday party. She has two options she can
buy a bag of 10 lb of jellybeans that cost $45, or she can guy a 15 lb of jellybeans that cost $50.
Sarah is wondering which bag would bag will be best to buy. Find the price per unit of each bag
and decide which one is better to buy.
16. Write each of the following quantities as a rate.
a. A cyclist covers 90 km in 3 hours.
b. Chris earned $68 for 4 hours work.
c. A secretary can typed 410 words in 7 minutes. How many words per minute did she type?
d. A driver pumped 10 gallons of gasoline into his tank at a cost of $34.68. Find the unit cost of
the gasoline.
18. Shade 75% of the diagram below:
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