Quantitative Aptitude • Time, Speed & WorkHard
A can do a job in 24 days and B in 36 days. They work together for 10 days, and then A leaves. In how many more days will B finish the job?
A. 14 days
B. 26 days
C. 11 days✓ Correct Answer
D. 21 days
💡 Solution & Explanation
Together they do 1/24 + 1/36 = 5/72 of the job per day, so in 10 days they finish 25/36 of it. The part left is 11/36 of the job. B alone does 1/36 of the job per day, so B needs 11/36 × 36 = 11 more days.
More Quantitative Aptitude Time, Speed & Work questions
- A boat moves at 7 km/h in still water and the stream flows at 3 km/h. How long will the boat take to go 60 km…
- A train 600 m long crosses a pole in 15 seconds. What is the speed of the train in km/h?
- A can do a job in 18 days and B in 36 days. They work together for 4 days, and then A leaves. In how many…
- A boat moves at 4 km/h in still water and the stream flows at 2 km/h. How long will the boat take to go 18 km…
- A can finish a piece of work in 10 days and B can finish it in 40 days. How many days will they take working…