Question:

The mean and the median of the following ten numbers in increasing order 10, 22, 26, 29, 34, x, 42, 67, 70, y are 42 and 35 respectively, then yx is equal to:

7/3

7/2

9/4

8/3

Correct option is A. 7/3
34 + x / 2 = 35 ⇒ x = 36
42 = (10 + 22 + 26 + 29 + 34 + 36 + 42 + 67 + 70 + y) / 10
⇒ y = 84
yx = 84 / 36 = 7 / 3