A) 42 years
B) 43 years
C) 44 years
D) 45 years
Correct Answer: D
Solution :
Let the father?s age and the sum of five children?s age in present be x years and y years respectively. After 15 years, Father?s age \[a-b+5,2a-2b+5\]years And sum of children?s age \[a+b+c=9\] years According to the question, \[x=y\] ...(1) And \[(x+15)=\frac{1}{2}(y+75)\] \[\Rightarrow \] \[1/2(a+b+c)\] ?.(2) Solving equations (1) and (2), we get x = 45 years.You need to login to perform this action.
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