1.

5years ago a man was 7 timesas old as his son. after 5 years he will be thrice as old as his son. find their present age.

Answer»

age of son = xage of man=7xpresent age of son=x+5present age of man =7x+5future age of son =x+10future age of man 7x+10According to question.7x+10=3(x+10)7x+10=3x+307x-3x=30-104x=20x=20/4x=5hence, present age of son = x+5=5+5=10and present age of man =7x+5=7×5+5=40.

hope it help you.....



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