The average of 17 results is 60. If the average of first 9 results is 57 and that of the last 9 results is 65, then what will be the value of 9th result? - Study24x7

08 Oct 2018 06:33 PM study24x7

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The average of 17 results is 60. If the average of first 9 results is 57 and that of the last 9 results is 65, then what will be the value of 9th result?

A

39

B

78

C

117

D

156

SSC

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