Time & Work Mcqs

Q.  8 children and 12 men complete a certain piece of work in 9 days. If each child takes twice the time taken by a man to finish the work, in how many days will 12 men finish the same work ?

a. 6 days
b. 8 days
c. 10 days
d. 12 days


ANSWER: See Answer
 
2 children = 1 man
(8 children + 12 men ) = 16 men
Now, less men, more days
12 : 16 : 9 : x
x = 16×9/12=12 days
MCQs:  Kamal will complete work in 20 days. If Suresh is 25% more efficient than Kamal, he can complete the work in________days.
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  A completes 80% of a work in 20 days. Then B also joins and A and B together finish the remaining work in 3 days. How long does it need for B if he alone completes the work?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  12 buckets of water fill a tank when the capacity of each bucket is 13.5 litres. How many buckets will be needed to fill the same tank, if the capacity of each bucket is 9 litres?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  A leak in the lower portion of a tank can empty the full tank in 9 hrs. An inlet pipe fills water at the rtae of 10 lit. a minute. When the tank is full, the inlet is opened and due to leak, the tank is empty in 16 hrs. How many litres does the cistern hold ?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  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 ?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  A alone can finish a work in X days. B alone can finish the same work in X+5 days. Together, they take 6 days to complete the work. Find X
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  Running at the same constant rate, 6 identical machines can produce a total of 270 bottles per minute. At this rate, how many bottles could 10 such machines produce in 4 minutes?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  P and Q need 8 days to complete a work. Q and R need 12 days to complete the same work. But P, Q and R together can finish it in 6 days. How many days will be needed if P and R together do it?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  10 men can complete a work in 7 days. But 10 women need 14 days to complete the same work. How many days will 5 men and 10 women need to complete the work?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  P can do a work in the same time in which Q and R together can do it. If P and Q work together, the work can be completed in 10 days. R alone needs 50 days to complete the same work. then Q alone can do it in__________?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  A leak in the bottom of a tank can empty the full tank in 6 hrs. An inlet pipe fills water at the rate of 4 lit. a minute. When the tank is full, the inlet is opened and due to the leak, the tank is empty in 8 hrs. The capacity of the tank in liters is_________?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  A tap can fill a tank in 32 min. and another can empty it in 16 min. If the tank is already half full and both the tanks are opened together, the tank will be_________?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  A and B can do a piece of work in 12 days; B and C in 15 days; C and A in 20 days. A alone can do the work in__________?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  Twelve men can do a work in twenty days while twenty women can finish the same work in sixteen days. Find the ratio between the capacity of a man and a woman.
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  A can lay a railway track between two given stations in 16 days and B can do the same job in 12 days. With help of C, they did the job in 4 days only. Then, C alone can do the job in_________?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  If 10 bulls can plough 20 identical fields in 3 days working 10 hours a day, then in how many days can 30 bulls plough 32 same identical fields working 8 hours a day?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  A work can be finished in 16 days by twenty women. The same work can be finished in fifteen days by sixteen men. The ratio between the capacity of a man and a woman is_________?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  P, Q and R can complete a work in 24, 6 and 12 days respectively. The work will be completed in________days if all of them are working together.
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  Two pipes P and Q can fill a cistern in 12 minutes and 16 minutes respectively. Simultaneously both the pipes are opened together, then after how much time Q should be closed so that the tank is full in 9 min ?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  A can do a certain job in 12 days. B is 60% more efficient than A. The number of days it takes for B to do the same piece of work, is:_________?
Category: Mathematics Quizzes,   Published by: T-Code Scripts