Challenger Logo

Challenger App

Get it on Google PlayGet it on App Store
App Logo

No.1 PSC Learning App

★
★
★
★
★
1M+ Downloads
Get App
25 men can complete a task in 16 days. Four days after they started working, 5 more men, with equal workmanship, joined them. How many days will be needed by all to complete the remaining task?

A15 days

B18 days

C12 days

D10 days

Answer:

D. 10 days

Read Explanation:

Solution: Given: 25 men do the task in 16 days 5 more men had joined them Formula Used: If M1 men can finish W1 work in D1 days and M2 men can finish W2 work in D2 days then, (M1 × D1)/W1 = (M2 × D2)/W2 Calculation: Total work done by 25 men = 25 × 16 = 400 units Work done in 1st four days = 25 × 4 = 100 units Remaining work = 400 - 100 = 300 units Numbers of men joined = 5 Total number of men = 25 + 5 = 30 Remaining work done by 30 men in x days 300 = 30 × x x = 10 ∴ 10 days will be needed by all to complete the remaining task

Related Questions:

If 10 men can complete a piece of work in 12 days by working 7 hours a day, then in how many days can 14 men do the same work by working 6 hours a day?
A and B working separately can do a piece of work in 10 days and 15 days respectively. If they work on alternate days beginning with A, in how many days will the work be completed ?
A can do a piece of work in 5 days, B in 10 days. How long will they take to do it together?
A, B എന്നിവർക്ക് 10 ദിവസം കൊണ്ട് ഒരു ജോലി ചെയ്യാം, B, C എന്നിവർക്ക് 12 ദിവസം കൊണ്ട് ചെയ്യാം, C, A എന്നിവർക്ക് 15 ദിവസം കൊണ്ട് ചെയ്യാം, A, B, C എന്നിവർ ചേർന്ന് വർക്ക് ചെയ്താൽ, അവർ എത്ര ദിവസം കൊണ്ട് ജോലി പൂർത്തിയാക്കും
Manoj can do a piece of work in 8 hours. Anand can do it in 8 hours. With the assistance of Anil, they completed the work in 2 hours. In how many hours can Anil alone do it?