Question

The overall age of X and Y is 12 years greater than the overall age of Y and Z. Z is how many decades younger than X?

Answer 1

X+Y=12+(Y+Z)

X-Z =12 ..........{12=1 decade+2}

z is 1decade younger than X

Answer 2

Answer:

Z is 1.2 decades younger than X.

Step-by-step explanation:

Given,

The overall age of X and Y is 12 years greater than the overall age of Y and Z.

Let x, y and z represents the age of X, Y and Z respectively,

Thus, x + y = ( y + z ) + 12,

⇒ x = z + 12

⇒ z = x - 12

Therefore, Z is 12 years younger than X,

Since, 10 years = 1 decades,

Hence, Z is 1.2 decades younger than X.