Question #ab1e5

1 Answer
A08
Jun 4, 2016

(a) 120120

Explanation:

Let Mr. Kashif should get in the next test=x=x
We know that total of 66 tests="Average"xx"number of tests"=Average×number of tests
Total of 66 tests=50xx6=300=50×6=300
:. Total of 7 tests=300+x

Also to maintain an average of 60 required total of 7 tests =60xx7=420

Equating the two for 7 tests
300+x=420
or x=420-300=120

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