Question : O, T, and P can do a piece of work in 3, 4, and 6 hours respectively. If they are working together, then in how much time they will finish the work?
Option 1: 1 hour
Option 2: 1 hour 10 minutes
Option 3: 1 hour 20 minutes
Option 4: 1 hour 15 minutes
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: 1 hour 20 minutes
Solution : Given, O, T, and P can do a piece of work in 3, 4, and 6 hours respectively. One day work of O, T, and P will be $\frac{1}{3}$, $\frac{1}{4}$, and $\frac{1}{6}$ respectively. Total one day work of O, T, and P together $=$$\frac{1}{3}+\frac{1}{4}+\frac{1}{6}=\frac{9}{12}$ Time taken by them to complete the work $= \frac{12}{9}=\frac{4}{3}$ hours = 1 hour 20 minutes Hence, the correct answer is 1 hour 20 minutes.
Candidates can download this e-book to give a boost to thier preparation.
Answer Key | Eligibility | Application | Admit Card | Preparation Tips | Result | Cutoff
Question : If 50 boys can finish a work in 30 days by working 6 hours per day, then how many hours per day should 25 boys work to finish that work within 24 days?
Question : Rama alone can do a work in 5 days working 4 hours a day. Seema alone can do the same work in 3 days working 10 hours a day. How many hours do they need to work together in a day to complete the same work in 6 days?
Question : A, B, and C together can finish a piece of work in 20 days. A alone can finish the work in 40 days. What part of the work B and C together can finish in a day?
Question : A journey takes 4 hours 30 minutes at a speed of 60 km/h. If the speed is 15 m/s, then the journey will take:
Question : Aditya can complete a grill painting job in 20 hours, while Vinay can complete the same work in 15 hours. If Aditya and Vinay both work together, then in how many hours will the painting work be completed?
Regular exam updates, QnA, Predictors, College Applications & E-books now on your Mobile