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A batsman’s average increases by 3 on scoring 87 runs in his 17th innings. His new average is1). 362). 373). 384). 39 |
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Answer» Average for a batsman $(= \FRAC{{Total\;runs}}{{number\;of\;innings}})$ Let his NEW average be x. Given, a batsman’s average INCREASES by 3 on scoring 87 runs in his 17th innings. ∴ x – 3 = (Total runs – 87)/16 ⇒ Total runs = 16x + 39 ----- eq1 and x = Total runs/17 ⇒ Total runs = 17x -------eq2 Solving eq1 and eq2 we get, 17x = 16x + 39 ⇒ x = 39 |
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