Question 1067831: The present age of father and his son are 35 years and 12 years respectively. Find how many years ago the product of their age was 210?
Answer by ikleyn(53937)   (Show Source):
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The present age of father and his son are 35 years and 12 years respectively. Find how many years ago the product of their age was 210?
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From the condition, it should be clear to you that the father is 35-12 = 23 years older than the son.
Consequently, they want you find the decomposition of the number 210 in the product of two factors differ by 23.
These factors are 30 and 7, and it was happened 5 (five) years ago.
Solved.
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