Robert father is 4 times as old as Robert, After 5 years, father will be three times as old as Robert. Find the present ages ?
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let present age of Robert is x years
so,present age of his father is 4x years
after 5 years Robert will be (x+5)years and his father will be (4x+5)years
according to question,
4x+5=3(x+5)
=> 4x+5=3x+15
=> 4x-3x=15-5
=> x=10
so, present age of Robert is 10 years and present age of hos father is 4×10years=40years
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