Aftab tells his daughter, "seven yrs ago i was 7 times as old as you were then.
Asked by somyap | 15th May, 2010, 07:39: AM
Let the present ages be X and Y, for Aftab and his daughter,
(X - 7) = 7(Y - 7)
X - 7Y = -42 ........(1)
X + 3 = 3(Y +3).
X - 3Y = 6 ............(2)
Solving the two equations for X and Y, we get, X = 42yrs, Y = 12 yrs.
And algebraically these equations give the situation i.e. equation (1) and (2).
Graphically the two lines are plotted and their intersection gives, the solution.
Answered by | 17th May, 2010, 12:30: PM
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