55 men can finish a work in 42 days. How many additional men must be engaged to complete the work 9 days earlier?
বিকল্পসমূহ (নিজের উত্তর যাচাই করতে ক্লিক করুন):
সঠিক উত্তর
1 (15 men)
বিস্তারিত ব্যাখ্যা ও বিশ্লেষণ:
Solution:
Here, Days needed = (42 - 9) = 33 days
To complete the work in 42 days, it requires 55 men
To complete the work in 1 days, it requires (55 × 42) men
To complete the work in 33 days, it requires (55× 42)/33 men = 70 men
∴ additional men required = (70 - 55) men = 15 men
