10 yrs hence,age of X will b 2 times that of age of Y 10 yrs ago age of X was 6 times that of age of Y wt are their present age?
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Let age of X be a
And age of Y be b
According to question
10 years from now
a + 10 = 2(b + 10)
= a + 10 = 2b + 20
Therefore a - 2b = 10 -----1
And ten years ago
a - 10 = 6(y - 10)
= a - 10 = 6b -60
Therefore 6b - a = 50 ------2
Adding 1 and 2
6b - a = 50
-2b + a = 10
= 4b = 60
Therefore b = 15
Substituting in 1 we get
a = 40
Therefore X is 40 years old
And Y is 15 years old
hope this helped
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