Work-Time

Sort Difficulty Level: Entry Level | Moderate | Difficult
A and B can separately complete a piece of work in 20 days and 30 days respectively. They worked together for some time, then B left the work. If A completed the rest of the work in 10 days, then B worked for….
6 days
yes
8 days
no
12 days
no
16 days
no
Show Answer
An empty tank can be filled by pipe A in 4 hours and by pipe B in 6 hours. If the two pipes are opened for 1 hour each alternately with first opening pipe A, then the tank will be filled in….
1 3/4 hours
no
2 3/5 hours
no
4 2/3 hours
yes
5 1/2 hours
no
Show Answer
Ganga and Saraswati, working separately can now a field in 8 and 12 hours respectively. If they work in stretches of one hour alternately, Ganga beginning at 9 a.m., when will the moving be completed?
6 p.m.
no
6.30 p.m.
yes
5 p.m.
no
5.30 p.m.
no
Show Answer
While working 7 hours a day, A alone can complete a piece of work in 6 days and B alone in 8 days. In what time would they complete it together, working 8 hours a day?
3 days
yes
4 days
no
2.5 days
no
3.6 days
no
Show Answer
12 men and 16 women together can complete a work in 4 days. It takes 80 days for one man alone to complete the same work,then how many days would be required for one woman alone to complete the same work?
140 days
no
160 days
yes
145 days
no
158 days
no
Show Answer
A leak can empty a completely filled tank in 25 hours. If the tank is full of water and a tap is opened which fills 3 litres of water per minute in the tank. The leak now takes 40 hours to empty the tank, then find the capacity of tank.
8000 litre
no
9000 litre
no
12000 litre
yes
11000 litre
no
Show Answer
Varun alone can do a piece of work in 16 hours while Raghav alone can do it in 18 hour. They together took Rs 360 to do the same work. If with the help of Sachin, they finish the piece of work in 4 hour, then how much money is paid to Sachin?
Rs 170
no
Rs 180
no
Rs 190
yes
Rs 200
no
Show Answer
A and B can complete work together in 5 days. If A works at twice his speed and B at half of his speed, this work can be finished in 4 days. How many days would it take for A alone to complete the job?
10
yes
12
no
15
no
18
no
Show Answer
Carpenter A can make a chair in 6 hours, carpenter B in 7 hours and carpenter C in 8 hours. If each carpenter works for 8 hours per day, how many chairs will be made in 21 days?
61
no
67
no
73
yes
79
no
Show Answer
If 15 pumps of equal capacity can fill a tank in 7 days, then how many extra pumps will be required to fill the tank in 5 days?
6
no
7
no
14
no
21
yes
Show Answer