arithmetic questions and answers paper 309 - skillgunNote: Paper virtual numbers may be different from actual paper numbers . In the page numbers section website displaying virtual numbers .
The sum of the ages of a father and his son Vijay is 45 years. Five years ago, the product of their ages was four times the fathers age at that time. The present age of father and son, respectively are
25 years,10 years
39 years, 6 years
36 years, 9 years
none of these
Let sons age be x years. Then fathers age = (45 - x)years.
(x—5)(45—x—5) = 4(45- x - 5) hence (x—5) = 4 so x = 9
Their ages are 36 years and 9 years.
Five years ago, the total of the ages of Manjunath and his son was 40 years. The ratio of their present ages is 4 : 1. What is the present age of the Manjunath
Let son's age = x. Then, Manjunath's age = 4x.
(x - 5)+(4x - 5) = 40 ? x = 10
Present age of Manjunath = 40 years.
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