Question

ity Physics Chemistry Biology Mathematics
Q No.: 134
The mean of 6, y, 7, x and 14 is 8. Which of the following is true?
O(A) x + y = 13
O(B) x - y - 13
O(C) 2x + 3y -13
O (D) x + y - 15​

Answer 1

Answer:

Mean = sum of all quantities / no. of quantities

Since there are 5 quantities, we will divide by 5

(6 + y + 7 + x + 14) / 5   = 8

6 + y + 7 + x + 14   = 40

27 + y + x = 40

y + x = 40 - 27

y  + x = 13

So, the correct answer is option (a)x + y =13

Hope it helps....