Asked by Anonymous
Don bats in 9 cricket matches. In the tenth match, he makes 9 runs and his average decreases by two. How many runs has he made in all?
Answers
Answered by
Steve
If his average so far is x, then
9x+9 = 10(x-2)
x=29
9*29+9 = 270
9x+9 = 10(x-2)
x=29
9*29+9 = 270
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