the age of Naina and Smita are in the ratio of 5 : 7. 4 years from now there ages will be 3 : 4 .find their present ages
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let the age be x. age of Naina 5x. age of Smita 7x. 4years from now. age of Naina 3. age of Smita 4. a/q. 5x-4/7x-4=3/4= 20x-16=21x-12=21x-20x=-12+16=x=4. present age of Naina 4x=4×4=16years. present age of Smita 7x=7×4=28years
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