Problems on Time and Work for Competitive Exams

MCQs on Time and Work for Bank, Railway, Staff Selection, MPSC, Talathi, Revenue Inspector, Patwari, DRDO Scientific Assistant, CEPTAM Exams

A, B and C can do a piece of work in 20, 30 and 60 days respectively. In how many days can A do the work if he is assisted by B and C on every third day?
(a) 17 days
(b) 15 days
(c) 11 days
(d) 12 days

Ans-(b)

A alone can do a piece of work in 6 days and B alone in 8 days. A and B undertook to do it for Rs. 3200. With the help of C, they completed the work in 3 days. How much is to be paid to C?
(a) Rs. 400
(b) Rs. 500
(c) Rs. 600
(d) Rs. 800

Ans-(a)

A can do a piece of work in 12 days. B can do this work in 16 days. A started the work alone. After how many days should B join him, so that the work is finished in 9 days?
(a) 4 days
(b) 3 days
(c) 2 days
(d) 5 days

Ans- (d)

A and B can do a piece of work in 40 days, B and C can do it in 120 days. If B alone can do it in 180 days, in how many days will A and C do it together?
(a) 25 days
(b) 30 days
(c) 45 days
(d) 20 days

Ans- (c)

A, B and C can do a piece of work in 24 days, 30 days and 40 days respectively. They began the work together but C left 4 days before the completion of the work. In how many days was the work completed?
(a) 11 days
(b) 12 days
(c) 14 days
(d) 13 days

Ans- (a)

12 men can complete a work in 8 days. 16 women can complete the same work in 12 days. 8 men and 8 women started working and worked for 6 days. How many more men are to be added to complete the remaining work in 1 day?
(a) 10
(b) 12
(c) 15
(d) 18

Ans- (b)

Pooja is twice as efficient as Aarti and takes 90 days less than Aarti to complete the job. Find the time in which they can finish the job together.
(a) 45 days
(b) 40 days
(c) 60 days
(d) 80 days

Ans- (c)

A can do a certain work in the same time in which B and C together can do it. If A and B together could do it in 10 days and C alone in 50 days, then B alone could do it in:
(a) 20 days
(b) 30 days
(c) 25 days
(d) 40 days

Ans- (c)

4 men and 6 women can complete a work in 8 days, while 3 men and 7 women can complete it in 10 days. In how many days will 10 women complete it?
(a) 30 days
(b) 40 days
(c) 50 days
(d) 60 days

Ans- (b)

A and B undertake to do a piece of work for Rs. 450. A can do it in 20 days and B can do it in 40 days. With the help of C, they finish it in 8 days. How much should C be paid for his contribution?
(a) Rs. 180
(b) Rs. 140
(c) Rs. 150
(d) Rs. 120

Ans-(a)