The overall age of X and Y is 12 years which is greater than the overall age of Y and Z. Now, Z is how many decades younger than X???
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Answer:
Z is 1.2 decades younger than X
Step-by-step explanation:
The overall age of X and Y is 12 years which is greater than the overall age of Y and Z. Now, Z is how many decades younger than X???
Let say over all age of X & Y = A
& Overall age of Y & Z = B
now the overall age of X and Y is 12 years greater than the overall age of Y and Z
=> A = 12 + B
=> X + Y = 12 + Y + Z
=> X = 12 + Z
=> X - Z = 12
Z is how 12 year younger than X
=> 12/10 = 1.2
=> Z is 1.2 decades younger than X
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