Question

Each term in the sequence below is 9 more than 1/3 the previous term. What is the value of y-x?

81, 36, x, y,...
Plz explain

Answer 1

y - x = - 5

Explanation:

Applying the rule gives

x =
`(1)/(3)` × 36 + 9 = 12 + 9 = 21

y =
`(1)/(3)` × 21 + 9 = 7 + 9 = 16

Thus

y - x = 16 - 21 = - 5

Answer 2

36/3=12. 12+9=21. X=21. 21/3=7. 7+9=16. Y=16. 21-16=5