Answers

2015-07-14T12:27:49+05:30
Let children ages=A,B,C,D
father's age=F
A.T.Q.
A+B+C+D=F
After 10 years
F+10=2/3 X (A+10+B+10+C+10+D+10)
F+10=2/3 X (A+B+C+D+40)
F+10=2/3 X (F+40) {as F=10}
F+10=(2F+80)/3
3(F+10)=2F+80
3F+30=2F+80
3F-2F=80-30
F=50
PLZ RATE BEST
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