10 years ago, Neli's mother was 4 times older than her daughter. After 10 years, the mother will be twice older than the daughter. The present age of Neli is:
ক. 5
খ. 10
গ. 20
ঘ. 30
উত্তর: 20
ব্যাখ্যা: প্রশ্নমতে এখন থেকে 10 বছর, মানে তখন থেকে 20 বছর পরে অবস্থা: Let Neli's age 10 years ago be x years. Mother's age 10 years ago = 4x years. 2 (x+20) = (4x+20) ⇒ x = 10. Present age of Neli = (x+10) = 20 years.
Admission FBS University papers MCQ — Prosthuti প্রশ্নব্যাংক
Admission · FBS · University papers · MCQ