Free Practice Questions for Time-and-work in Maths

Practice questions here, for every subject and every exam. Unlimited questions for unlimited attempts, given with answers and explanations.

Question 81:

3 boys and 3 girls can do a piece of work in $\frac{6}{5}$ hour. How many hours will 1 boy and 1 girl need to complete the work?

Question 82:

A alone can do a piece of work in 3 days. B alone can finish the same work in 7 days. If $A$ and $B$ work together for 2 days, then what part of the work will be left?

Question 83:

X can finish a job in 131 days. He worked for 47 days alone and the remaining work was completed by $Y$ in 84 days. How many days would both te

Question 84:

Direction: Study the graph and answer the question given below.

The given graph represents the number of workers getting daily wages (in₹).

Total number of workers = 200

The total number of workers whose daily wages are less than ₹550 is what percentage less than the total number of workers whose daily wages are ₹550 and above?

Question 85:

A certain number of persons can complete a piece of work in 46 days. If there were 8 persons more, the work could be finished in 16 days less. How many persons were originally there?

Question 86:

A and B can do a work in 15 days and 25 days, respectively. They worked together for 5 days, after which B was replaced by C and the remaining work was completed by A and C in the next 4 days. In how many days will C alone complete the same work?

Question 87:

Sai can do a piece of work in 17 days, while Bindu can do it in 51 days. Sai works on the first day, Bindu works on the second day and continues till the end of the work. In total how many days did it take to complete the work?

Question 88:

$\mathrm{P}$ and $\mathrm{Q}$ together can finish a work in 6 days. $Q$ alone can do the same work in 10 days. In how many days can P alone do the same work?

Question 89:

4 trained laborers take 8 days to build a pond whereas 8 untrained laborers take 12 days to build it. In how many days will it take 3 trained and 15 untrained laborers to build the pond?

Question 90:

If 16 people can build a wall in 15 days, how many people would be needed to build it in 8 days?

Question 91:

7 experts and 5 trainees can complete a job in 9 days while 4 experts and 15 trainees can complete it in 12 days. How many days will 5 experts and 6 trainees need to complete the job?

Question 92:

Brij alone can paint a wall in $7.2$ days while Madhu takes $10.8$ days to do the same work. How many days will it take to paint $\frac{5}{6}$ of the wall working together?

Question 93:

Working 8 hours a day, Ram writes a book in 18 days. How many hours a day should he write to write the whole book in 12 days?

Question 94:

Working alone, Rakesh and Ranjit can complete a piece of work in 4 and 6 days respectively. Ranjit started the work alone and Rakesh joined after 2 days. In how many days will they need to complete the remaining work?

Question 95:

Rashid can complete a job by himself in 15 days while Kausik can do the same work alone in 21 days. If they work together how many days will it take them to complete the work?

Question 96:

Zubin and Pravin can individually complete a job in $36 \mathrm{~min}$ and $60 \mathrm{~min}$ respectively. Starting with Zubin, they work alternately for a minute each till the work is completed, only the one working at the end allowed to work for less than a minute in his final turn. How long will it take to complete the job?

Question 97:

Govinda usually leaves his home every day at 8 am and travels at a certain speed to reach office on time. One day, he travelled at $\frac{4}{5}$ of the usual speed and hence arrived $22.5$ min late. How much time does Govinda usually take to reach his office?

Question 98:

3 men and 5 boys can do a piece of work in 15 days, while 6 men and 7 boys can do the same work in 9 days. Find the relation between the work done by the boys and the work done by the men.

Question 99:

Twenty persons take 15 days to complete a certain work, working 8 hours a day. To complete the same work in 4 days, working 10 hours a day, the number of persons required is:

Question 100:

'A' alone can do a piece of work in 10 days and 'B' alone in 15 days. 'A' and 'B' undertook to do it for Rs. 42,000. With the help of  'C', they completed the work in 5 days. How much (in Rs.) is to be paid to 'B'?

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