If Shamim were twice as old as he is now, he would be 40 years older than Kamal. If Kamal is 10 years younger than Shamim, how old is Shamim now?
সমাধান
সঠিক উত্তর: Option B
S - K = 10 ............ 1
2S - K = 40 ........... 2
2 - 1, we get,
2S - S = 40 - 10
S = 30
