A game of darts involves throwing darts at a target. James is practicing and so far has hit the target 10 out of 20 times. He wants to bring his average of hitting the target to 75%. Which equation should James use to find the number of darts, n, that should hit the target consecutively to bring his п, average to 75%?

A First Course in Probability (10th Edition)
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ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
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Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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A game of darts involves throwing darts at a target. James is
practicing and so far has hit the target 10 out of 20 times. He
wants to bring his average of hitting the target to 75%.
Which equation should James use to find the number of
darts, n, that should hit the target consecutively to bring his
average to 75%?
10 +n
75
20 +n
100
20 +n
75
10 +n
100
10
+ n
20
75
=
100
20
75
+ n =
10
-
100
Transcribed Image Text:A game of darts involves throwing darts at a target. James is practicing and so far has hit the target 10 out of 20 times. He wants to bring his average of hitting the target to 75%. Which equation should James use to find the number of darts, n, that should hit the target consecutively to bring his average to 75%? 10 +n 75 20 +n 100 20 +n 75 10 +n 100 10 + n 20 75 = 100 20 75 + n = 10 - 100
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