Question

When two numbers 5x and 7y are included in a set of numbers 17, 21, 22, 34 and 41, the average of the set increases by 111/9%. If ‘x’ and ‘y’ are natural numbers and x > y, then what is the average of x2(x – 2y), y2 (2x – y) and xy (y – x) ?

Answer 1

Answer:

9

Step-by-step explanation:

find the average of the given set , you will get 27

after the addition of 5x and 7y the average will increase by 100/9% , it will become 30

now we get that 5x + 7y = 75  and also given that x>y

put value of y= 5 to get x=8

find the required average