Question 55

Set A contains seven numbers and the average of these numbers is 41. Set B contains five numbers and the average of these numbers is 44. The overall average of both the sets is:

Solution

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Set A contains 7 numbers and its average is 41

i.e; sum=41$$\times\ $$7=287

set B contains 5 numbers and its average is 44

i.e; sum=44$$\times\ $$5=220

total average = (287+220)/12

=>42.25

therefore answer is option B

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