Question

The present age of nitin is two times the present age of his sister pooja. After 7 years their ages will add to 68 years. Find their ages

Answer 1

n=2p

(n+7) + (p+7) = 68

2p + 7 + p + 7 = 68

3p + 14 = 68

3p = 68 - 14 = 54

p=54/3=18

n=2p=36

Check: (18+7)+(36+7)=25+43=68  good