the mean of 5 numbers is 27 if one new number is included. the new mean is 25. Find the included number
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15 is the new number
shrifarale:
can u send how u did it
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15
sum of earlier numbers equals to 27 x 5 = 135
mean of 6 numbers with a new number added is 25 so some of all numbers including new number is 25 × 6 = 150
show new added number equals to 150 - 135 = 15
hence 15 is the new added number.
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