Question 825089: Rahul's father is 3 times as old as Rahull. Four years ago, his father was 4 times older than him. How old is Rahul? Answer by TimothyLamb(4379) (Show Source):
You can put this solution on YOUR website! ---
x = father
y = rahull
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x = 3y
x - 4 = 4(y - 4)
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put the system of linear equations into standard form
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x - 3y = 0
x - 4 = 4y -16
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x - 3y = 0
x - 4y = -12
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solution:
x = father = 36
y = rahull = 12
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