9 years ago,grandfather age was 9 times his grandsons age at that time .after 15 years,his age will be thrice as the grandsons age. find the present age
Answers
Answered by
0
Answer:
Grandsons present age =17
Grandfathers present age =81
Answered by
3
Answer:
Grandfather and grandson's present age is 81 and 17 respectively.
Step-by-step explanation:
Let, grandfather's present age= x
Let, grandson's present age = y
Now according to the question,
x-9= 9(y-9)
⇒ x - 9y = -81+9
⇒x-9y= -72 .(i)
And
x+15= 3(y+15)
⇒x-3y = 45-15
⇒ x-3y = 30 .(ii)
Solving (i) and (ii) we get ,
x= 81 , y= 17
Therefore, grandfather and grandson's present age is 81 and 17 respectively.
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