Arithmetic Aptitude :: Time and Work
- A can do (1/3) of a work in 5 days and B can do (2/5) of the work in 10 days. In how many days both A and B together can do the work?
- A, B and C contract a work for Rs. 550. Together A and B are to do 7/11 of the work. The share of C should be?
- A can do a piece of work in 80 days. He works at it for 10 days and then B alone finishes the work in 42 days. The Two together could complete the work in?
- Mahesh and Umesh can complete a work in 10 days and 15 days respectively. Umesh starts the work and after 5 days Mahesh also joins him in all the work would be completed in
- Twelve men can complete a work in 8 days. Three days after they started the work, 3 more men joined them. In how many days will all of them together complete remaining work?
- A can do a piece of work in 10 days and B can do the same piece of work in 20 days. They start the work together but after 5 days. A leaves off B will do the remaining piece of work in?
- A and B can together finish a work in 30 days. They worked for it for 20 days and then B left. The remaining work was done by A alone in 20 more days. Alone can finish the work in?
- A can complete a job in 9 days. B in 10 days and C in 15 days. B and C start the work and are forced to leave after 2 days. The time taken to complete the remaining work is?
- A, B and C together earn Rs.150 per day while A and C together earn Rs. 94 and B and C together earn Rs. 76. The daily earning of C is?
- A can do a certain job in 12 days. B is 60% more efficient than A. Then Number of days it takes B to do the same piece of work is?
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Answer : Option C
Explanation :
1/3 of work is done by A in 5 days
Therefore, whole work will be done by A in 15 days
Answer : Option B
Explanation :
1 man's one day's work = 1/96 12 men's 3 day's work = (3 x 1/8) = 3/8
Answer : Option A
Explanation :
(B + C)'s 2 day's work = 2 (1/10 + 1/15) = 1/3 Remaining work = (1 “ 1/3) = 2/3 1/9 work is done by A in 1 day Therefore 2/3 work is done by A in (9 x 2/3) = 6 days
Answer : Option C
Explanation :
Ratio of times taken by A and B = 160 : 100 = 8 : 5