5/8th of a job is completed in 10 days. If a person works at the same pace, how many days will he take to complete the job?
a. 4 b. 5 c. 6 d. 7 ANSWER: 6 Explanation: Solution: It is given that 5/8th of the work is completed in 1…
Time-and-Work
A car consumes 210 liters of petrol weekly. For how many days will 1470 liters of petrol be sufficient?
a. 48 b. 49 c. 50 d. 52 ANSWER: 49
12 men and 18 boys working 7.5 minutes an hour complete a particular piece of work in 60 hours. If a boy’s work is half as efficient as a man’s work, how many boys will be needed to help 21 men to achieve twice the work in 50 hours working 9 minutes in an hour.
a. 42 b. 46 c. 48 d. 38 ANSWER: 42 Explanation: 1 man is equivalent to 2 boys in work capacity. 12 men + …
A pack of people can complete a certain amount of work in 12 days. Two times the same number of persons will complete half of the work in?
a. 12 days b. 3 days c. 4 days d. 6 days ANSWER: 3 days Explanation: More no of people: Less days (Invers…
A can build a wall in the same time in which B and C together can do it. If A and B together could do it in 25 days and C alone in 35 days, in what time could B alone do it?
a. 175 days b. 100 days c. 90 days d. None of these ANSWER: 175 days Explanation: No explanation is avail…
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?
a. 2 b. 4 c. 8 d. 10 ANSWER: 2 Explanation: M1*D1*W2 = M2*D2*W1 10*3*10*32 = 30*d*8*20 d = 2 days
P and Q together can complete a piece of work in 4 days. If P alone can complete the same work in 20 days, in how many days can Q alone complete that work?
a. 8 b. 7 c. 4 d. 5 ANSWER: 5 Explanation: (P + Q)'s 1 day's work = 1/4, P's 1 day's work…
A man can do a piece of work in 4 days, but with the help of his daughter, he can do it in 3 days. In what time can his daughter do it alone?
a. 6 ½ days b. 7 days c. 9 ½ days d. 12 days ANSWER: 12 days Explanation: Daughter’s 1 day’s work = (1/3 …
An employer pays Rs. 30 for each day a worker works, and forfeits Rs. 5 for each day he is idle. At the end of 60 days, a worker gets Rs. 500. For how many days did the worker remain idle?
a. 35 b. 48 c. 52 d. 58 ANSWER: 52 Explanation: Suppose the worker remained idle for m days. Then, he wor…
Ramesh can complete a work in 12 days, working 7 hours a day. Suresh can complete the same work in 8 days, working 9 hours a day. If Ramesh and Suresh work together working 7 hours a day, in how many days can they complete the work?
a. 7 * 3 / 23 b. 5 * 7 / 13 c. 6 * 5 / 13 d. 6 * 6 / 11 e. None of these ANSWER: 5 * 7 / 13 Explanation: R…
If 12 men or 16 women can do a work in 172 days, how long will 21 men and 15 women to do the same work?
a. 64 days b. 60 days c. 86 days d. 75 days ANSWER: 64 days Explanation:
P can do a work in 30 days. Q is 25% more efficient than P in completing the same work. In how many days will Q complete the work?
a. 37.5 days b. 22.5 days c. 20 days d. 24 days ANSWER: 24 days Explanation:
A can work 5 times faster than B and takes 60 days less than B to complete the work. In how many days does A and B individually can complete the work?
a. A = 20 days; B = 100 days b. A = 20 days; B = 80 days c. A = 15 days; B = 75 days d. A = 10 days; B…
If 3 men can do a work in 2 days and 4 boys can do the same work in 6 days, then in how many days will the same work be completed by 8 men and 8 boys?
a. 2 days b. 3/5 Days c. 1.5 Days d. 3/4 Days ANSWER: 3/5 Days Explanation:
If 24 men can finish a work in 10 days, then find the number of days required to complete the same work by 30 men?
a. 8 days b. 6 days c. 3 days d. 7.5 days ANSWER: 8 days Explanation:
Meena can do a piece of work in 20 days. Kumar can do it in 30 days. They start working together on the work but 10 days before the completion of the work, Kumar leaves. In how many days does the total work get completed?
a. 20 days b. 12 days c. 6 days d. 16 days ANSWER: 16 days Explanation: