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4 Cards in this Set
- Front
- Back
- 3rd side (hint)
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The Parkers bought a table that was marked $400. On the installment plan, they made a down payment equal to 25% of the marked price, plus 12 monthly payments of $30 each. How much more than the marked price did they pay by buying it this way? |
A. $25 B. $50 C. $60 D. $460 |
( C. ) The down payment was 25% (or 1/4) of the total payment. $400 x (1/4) = $100 $30 x 12 = $360 (sum of monthly payments) $360 + $100 = $460 (cost on installment plan) $460 - $400 = $60 (extra cost on installment) |
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A scientist planted 120 seeds, of which 90 sprouted. What percentage of the seeds failed to sprout? |
A. 25% B. 24% C. 30% D. 75% |
( A. ) The number of seeds that failed to sprout was 120 - 90 = 30 The percentage of seeds that failed to sprout was 30/120 = 1/4 = 25%
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An airplane traveled 1,000 miles in 2 hours and 30 minutes. What was the average rate or speed, in miles per hour, for the trip? |
A. 200 miles per hour B. 300 miles per hour C. 400 miles per hour D. 500 miles per hour |
( C. ) To find the average rate of speed, divide the distance covered (1,000 miles) by the time spent traveling (2 1/2 or 2.5 hours). Clear the decimal in the divisor. 1,000 10,000 -------- = ----------- = 400 mph 2.5 25 |
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What is the value of this expression ?
0.05 x 4 ----------- 0.1 |
A. 20 B. 2 C. 0.2 D. 0.02 |
( B. ) Solve by multiplying first and then dividing. Clear the decimal in the divisor. |
