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Question

The age of Mr. Ramesh is 4 times the age of his son. After 10 years, Mr. Ramesh will be only twice the age of his son. Find the present age of Mr. Ramesh's son?

A
5
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B
10
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C
20
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D
6
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Solution

The correct option is A 5
Present age of Mr Ramesh and his son,
Mr Ramesh =4×Son

After 10 years their ages will be,

Ramesh + 10 = 2(Son +10)

Replace Ramesh with 4 x Son
4xSon +10=2 xSon +20

Collect like terms
4 x Son 2 x Son =2010
2xSon =10
Son =5
Mr Ramesh's son is 5 years old.

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