Difference between revisions of "1994 AJHSME Problems/Problem 14"
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Two children at a time can play pairball. For <math>90</math> minutes, with only two children playing at time, five children take turns so that each one plays the same amount of time. The number of minutes each child plays is | Two children at a time can play pairball. For <math>90</math> minutes, with only two children playing at time, five children take turns so that each one plays the same amount of time. The number of minutes each child plays is | ||
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<math>\text{(A)}\ 9 \qquad \text{(B)}\ 10 \qquad \text{(C)}\ 18 \qquad \text{(D)}\ 20 \qquad \text{(E)}\ 36</math> | <math>\text{(A)}\ 9 \qquad \text{(B)}\ 10 \qquad \text{(C)}\ 18 \qquad \text{(D)}\ 20 \qquad \text{(E)}\ 36</math> | ||
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| + | ==Solution== | ||
| + | There are <math>2 \times 90 = 180</math> minutes of total playing time. Divided equally among the five children, each child gets <math>180/5 = \boxed{\text{(E)}\ 36}</math> minutes. | ||
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| + | ==See Also== | ||
| + | {{AJHSME box|year=1994|num-b=13|num-a=15}} | ||
Revision as of 23:50, 22 December 2012
Problem
Two children at a time can play pairball. For 
minutes, with only two children playing at time, five children take turns so that each one plays the same amount of time. The number of minutes each child plays is
Solution
There are 
minutes of total playing time. Divided equally among the five children, each child gets 
minutes.
See Also
| 1994 AJHSME (Problems • Answer Key • Resources) | ||
| Preceded by Problem 13 |
Followed by Problem 15 | |
| 1 • 2 • 3 • 4 • 5 • 6 • 7 • 8 • 9 • 10 • 11 • 12 • 13 • 14 • 15 • 16 • 17 • 18 • 19 • 20 • 21 • 22 • 23 • 24 • 25 | ||
| All AJHSME/AMC 8 Problems and Solutions | ||
