A) 19 year
B) 29 year
C) 39 year
D) 49 year
Correct Answer: C
Solution :
Let the present age of B be\[x\]year The present age of A would be \[(x+9)\] years. After 10 years the age of A would be \[(x+9+10)=(x+19)\]and Before ten years the age of B was\[(x-10)\]years. Now from given information in the question, \[x+19=2\text{ }(x-10)\] \[x+19=2x-20\] \[x=19+20=39\text{ }year\]You need to login to perform this action.
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