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1. |
Solve the proportion  =  |
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A. |
80 |
B. |
6 |
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C. |
20 |
D. |
13.5 |
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Hint |
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2. |
A doll house is modeled after a family's house. For every 12 inches in the actual house, the doll house measures 1 inch. What is the scale of the doll house to the actual house? |
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A. |
1:6 |
B. |
1:10 |
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C. |
1:1 |
D. |
1:12 |
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Hint |
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3. |
A scale model of the Golden Gate Bridge in San Francisco is 2.5 feet long. The actual bridge is 4200 feet long. What is the scale of the model? |
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A. |
1:140 |
B. |
1:2.5 |
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C. |
1:1680 |
D. |
1:4200 |
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Hint |
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4. |
A ratio that compares a number to one hundred is called a(n) _______. |
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A. |
cross product |
B. |
percent |
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C. |
hundredth |
D. |
scale |
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Hint |
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5. |
Which proportion correctly states the percent proportion where P is the percentage, B is the base and r is the percent? |
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A. |
 =  |
B. |
 = |
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C. |
=  |
D. |
 =  |
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Hint |
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6. |
Find 12.5% of 32. |
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A. |
4 |
B. |
400 |
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C. |
256 |
D. |
2.56 |
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Hint |
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7. |
Soundous needs a 50% saline solution. She has 60 milliliters of a 40% solution. How many milliliters of a 70% solution should she add to obtain the required 50% solution? |
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A. |
270 milliliters |
B. |
30 milliliters |
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C. |
90 milliliters |
D. |
180 milliliters |
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Hint |
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8. |
Sales tax is an example of a ______. |
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A. |
percent of increase |
B. |
simple interest |
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C. |
discount |
D. |
percent of decrease |
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Hint |
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9. |
In 1990, 5,283,055 people subscribed to cellular telephone service. In 1998, the number of people had risen to 69,209,321. To the nearest percent, find the percent of increase. |
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A. |
92% |
B. |
920% |
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C. |
1210% |
D. |
121% |
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Hint |
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10. |
Two die are rolled. What is the probability that the sum of the
two die is 8? |
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A. |
 |
B. |
 |
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C. |
 |
D. |
 |
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Hint |
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11. |
The odds of an event can best be described as ______. |
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A. |
 |
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B. |
 |
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C. |
 |
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D. |
 |
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Hint |
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12. |
On a particular January day in Fargo, North Dakota, the probability of snow for Monday is 50% and for Tuesday is 70%. Find the probability that it will snow on either Monday or Tuesday in Fargo. |
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A. |
50% |
B. |
85% |
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C. |
60% |
D. |
100% |
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Hint |
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13. |
Convert 18 L to mL. |
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A. |
18,000 mL |
B. |
180 mL |
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C. |
1.8 mL |
D. |
0.018 mL |
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Hint |
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14. |
If you spin two spinners numbered one through ten, what is the probability of spinning a 2 the first one and an odd number the second? |
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A. |
 |
B. |
 |
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C. |
 |
D. |
 |
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Hint |
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