CBSE Class 10 Answered
five years hence father's age will be three times his son's age then , five years ago father's age was seven times his son's age then find their present ages
Asked by Prajyot Tugaonkar | 22 Oct, 2013, 10:51: AM
Expert Answer
Let the father's age be x and the son's age be y
Five years hence:
Father's age = x+5
Son's age = y+5
Given: x+5 = 3(y+5)
That is x - 3y = 10 ....(1)
Five years ago:
Father's age = x - 5
Son's age = y - 5
Given: x - 5 = 7(y - 5)
That is x - 7y = -30 ....(2)
Solving the two simultaneous equations we have
x = 40 and y = 10
Thus the present ages of father and son are 40 and 10
Answered by Vimala Ramamurthy | 22 Oct, 2013, 12:02: PM
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