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CBSE Class 10 Answered

Parthiv tells his son Ariv"Five years ago my age was seven times your age then. Further ten years hence, my age will be two and a half times your age then." Find the present age of both of them.
Asked by chandrikajain.0102 | 28 Jun, 2020, 10:00: AM
answered-by-expert Expert Answer
Let the ages of parthiv and his son  be x and y years respectively.
According to the question,
x - 5 = 5(y - 5)
x - 5y = -20 ... (i)
x + 10 = 2.5(y+10)
x - 2.5y = 15
2x - 5y = 30 ... (ii)
Subtracting (i) from (ii), we get
x = 50
Substituting x in (i) we have
5y = 50 + 20
y = 14
Answered by Renu Varma | 30 Jun, 2020, 10:53: AM

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