সব প্রশ্নে ফিরে যান
Math
If A and B together can complete a work in 18 days. A and C together in 12 days, and B and C together in 9 days, then B alone can do the work in-
A) 18 days
B) 24 days
সঠিক উত্তর
C) 30 days
D) 40 days