Question

if the mean of 4 7 x y and 10 is 8 then find the value of x + Y

Answer 1

Mean = ( 4 + 7 + x + y + 10 ) / 5 = 8

         ==> ( x + y  + 21 ) = 8 × 5

         ==> x + y + 21  =  40

         ==> x + y = 40 - 21

         ==> x + y = 19

The value is 19

Hope it helps :-)

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Answer 2

Answer:

19

Step-by-step explanation:

here $\frac{ 4 + 7 + x + y + 10}{5}$ = 8

21 + x + y = 40

x + y = 19