Method of Substitution to Find the Solution of a Pair of Linear Equations
Two years ago...
Question
Two years ago Salim was thrice as his daughter and six years later the he will be four year older than twice her age How are they now?
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Solution
Let the present age of salim be x and yhat of his daughter be y 2 years ago age of salim=x-2 age of daughter=y-2 (x-2)=3(y-2) x-3y=-4 after 6 years x+6=4+2(y+6) x-2y=10 Upon solving the above two eq we get y=14 x=38