50 persons can do a work in 12 day's by working 8 hours a day. Working how many hours per day can 60 persons finish the work in 16 days?
সমাধান
সঠিক উত্তর: Option C
মনে করি ,নির্ণেয় সময় =x ঘণ্টা
⇒ 50×12×8=60×16×x
⇒ 60×16×x=50×12×8
⇒ x=(50×12×8)/60×16
x=5 hours
⇒ 50×12×8=60×16×x
⇒ 60×16×x=50×12×8
⇒ x=(50×12×8)/60×16
x=5 hours
