A and B can together finish a work 30 days. They worked together for 20 days and then B left. After another 20 days, A finished the remaining work. In how many days A alone can finish the work?

Question

নিচের অপশন গুলা দেখুন

• 54
• 40
• 80
• 60

Answer 1

সঠিক উত্তর হচ্ছে: 60

ব্যাখ্যা:

(A +B)'s 20 day's work = 20 × 1/30 = 2/3
Remaining work = 1 − 2/3 = 1/3
Now,1/ 3 work is done by A in 20 days
∴ The whole work will be done by A
in 20×3 = 60days