Question 652395
a pitcher has given up 12 runs in 20 innings. if it is assumed that the number of runs varies directly as the number of innings, how many runs would he give up in 9 innings
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r = k*n
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Solve for "k" using "a pitch gives up 12 runs in 20 innings":
12 = k*20
k = 12/20 = 3/5
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Equation:
r = (3/5)n
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How many runs would he give up in 9 innings?
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r = (3/5)9
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# of runs = 27/5 = 5 2/5 
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Cheers,
Stan H.