Alam starts working on a job and works on it for 12 days and completes 40% of the work. Then Babu joins Alam and together they complete the rest of the work in 12 days. How long (in days) will it take Babu to complete the job if he works alone?
বিকল্পসমূহ (নিজের উত্তর যাচাই করতে ক্লিক করুন):
সঠিক উত্তর
2 (60)
বিস্তারিত ব্যাখ্যা ও বিশ্লেষণ:
Solution:
Let the total work is 100x
Alam starts working on a job and works on it for 12 days and completes 40% of the work.
Remaining work 100x - 40x = 60x
Babu done 20x in 12 days
∴ Babu done 100x in (12 × 100x)/20x days
= 60 days
