A batsman had a certain average of runs for 16 innings. in the 17th innings, he made a score of 87 runs there by increasing his average by 3. what is his average after 17 innings?
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let his avg. score in 16 inn. = x
so his avg. score in 17 inn. = x+3
(16*x+87 )/17= x+3
⇒16x+87 = 17x+51
⇒x =36
so,his avg. after 17 inn. is x+3 = 36+3 = 39
so his avg. score in 17 inn. = x+3
(16*x+87 )/17= x+3
⇒16x+87 = 17x+51
⇒x =36
so,his avg. after 17 inn. is x+3 = 36+3 = 39
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