Answers

2015-09-15T13:41:28+05:30
SOL:
avg =sum of all items/no. of items
required avg =85.
thus,85 should be equal to
88+79+81+86+x
----------------------
         5
85=(334+x)/5
334+x=85 x 5
334+x=425
x=91
so, he should score at least 91 runs 

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