Question : A certain number of men can do a piece of work in 40 days. If there were 45 men more the work could have been finished in 25 days. Find the original number of men employed in the work.
Option 1: 70
Option 2: 85
Option 3: 65
Option 4: 75
Recommended: How to crack SSC CHSL | SSC CHSL exam guide
Don't Miss: Month-wise Current Affairs | Upcoming government exams
New: Unlock 10% OFF on PTE Academic. Use Code: 'C360SPL10'
Correct Answer: 75
Solution : Let the total number of men be $x$. The work is the same. So, $W_1=W_2=1$ Use the following formula to solve the question: $\frac{M_{1}\times D_{1}}{W_{1}}=\frac{M_{2}\times D_{2}}{W_{2}}$ Where $M_1$ and $M_2$ are men, $D_1$ and $D_2$ are days and $W_1$ and $W_2$ are work done. $\frac{x×40}{1} = \frac{(x+45)×25}{1}$ ([If $x$ men are initially employed] $⇒ 40x = 25x-1125$ $⇒ 15x= 1125$ $\therefore x = 75$ Hence, the correct answer is 75.
Candidates can download this e-book to give a boost to thier preparation.
Application | Eligibility | Admit Card | Answer Key | Preparation Tips | Result | Cutoff
Question : 4 men and 7 women can do work in 8 days. 7 men and 4 women can do the same work in 5 days. Find the number of days in which 8 women can finish the work.
Option 1: 60 days
Option 2: 55 days
Option 3: 40 days
Option 4: 45 days
Question : Three people A, B, and C worked together and finished a work in 9 days. If A alone can finish the same work in 18 days, and B alone in 30 days, then the number of days C alone will take is:
Option 1: 36 days
Option 2: 45 days
Option 4: 54 days
Question : Three men can complete a piece of work in 6 days. Two days after they started the work, 3 more men joined them. How many days will it take to complete the remaining work?
Option 1: 1 day
Option 2: 2 days
Option 3: 3 days
Option 4: 4 days
Question : A can finish a work in 15 days, B can finish the same work in 25 days. They work together for 5 days. The rest of the work is finished by A and C in 4 days. Then C alone can finish the work in:
Option 1: 18 days
Option 2: 24 days
Option 3: 20 days
Option 4: 21 days
Question : A certain number of persons can complete a work in 90 days. If there were 10 persons less, it would have taken 10 days more for the work to be completed. Find the total number of persons in the beginning.
Option 1: 90
Option 2: 110
Option 3: 85
Option 4: 100
Regular exam updates, QnA, Predictors, College Applications & E-books now on your Mobile