Time and Work MCQs for Competitive Examination
Solve the following problems.
Q. 81
3 men and 4 boys can complete a piece of work in 12 days. 4 men and 3 boys can do the same work in 10 days. Then 2 men and 3 boys can finish the work in how many days?
(A) 17(1/2) days
(B) 5(5/11) days
(C) 8 days
(D) 22 days
Answer: (A) 17(1/2) days
Explanation: N/A
Q. 82
If 6 men and 8 boys can do a piece of work in 10 days and 26 men and 48 boys can do the same in 2 days, then the time taken by 15 men and 20 boys to do the same type of work will be:
(A) 4 days
(B) 7 days
(C) 5 days
(D) 6) days
Answer: (A) 4 days
Explanation: N/A
Q. 83
A company employed 200 workers to complete a certain work in 150 days. If only one-fourth of the work has been done in 50 days, then in order to complete the whole work in time, the number of additional workers to be employed was
(A) 100
(B) 200
(C) 300
(D) 600
Answer: (A) 100
Explanation: N/A
Q. 84
Two workers A and B are engaged to do a piece of work. A, working alone would take 8 hours more to complete the work than when working together. If B worked alone, then it would take 4(1/2) hours more than when working together. The time required to finish the work together is
(A) 4 hours
(B) 5 hours
(C) 6 hours
(D) 8 hours
Answer: (C) 6 hours
Explanation: N/A
Q. 85
If 28 men complete 7/8 of a piece of work in a week, then the number of men, who must be engaged to get the remaining work completed in another week, is
(A) 3
(B) 4
(C) 5
(D) 6
Answer: (B) 4
Explanation: N/A
Q. 86
P can complete 1/4 th of a work in 10 days. Q can complete 40% of the same work in 15 days. R completes 1/3 of work in 13 days. and S completes 1/6 of work in 7 days. Who will be able to complete the work first?
(A) P
(B) Q
(C) R
(D) S
Answer: (B) Q
Explanation: N/A
Q. 87
A can cultivate 2/5 th of a land in 6 days and B can cultivate 1/3 rd of the same land in 10 days. Working together A and B can 4 cultivate 4/5 th of the land in
(A) 4 days
(B) 5 days
(C) 8 days
(D) 10 days
Answer: (C) 8 days
Explanation: N/A
Q. 88
A and B together can do a work in 12 days. B and C together do it in 15 days. If A’s efficiency is twice that of C, then the days required for B alone to finish the work is
(A) 60 days
(B) 30 days
(C) 20 days
|(D) 15 day
Answer: (C) 20 days
Explanation: N/A
Q. 89
A takes 10 days less than the time taken by B to finish a piece of work. If both A and B can do it in 12 days, then the time taken by B alone to finish the work is
(A) 30 days
(B) 27 days
(C) 20 days
(D) 25 days
Answer: (A) 30 days
Explanation: N/A
Q. 90
A does half as much work as B in one-sixth of the time. If together they take 10 days to complete a work, how much time shall B take to do it alone?
(A) 70 days
(B) 30 days
(C) 40 days
(D) 50 days
Answer: (C) 40 days
Explanation: N/A
Q. 91
1 man, 3 women and 4 boys can do a piece of work in 96 hours, 2 men and 8 boys can do it in 80 hours, 2 men and 3 women can do it in 120 hours. 5 men and 12 boys can do it in
(A) 39(1/11) hours
(B) 42(7/11) hours
(C) 43(7/11) hours
(D) 44 hours
Answer: (C) 43(7/11) hours
Explanation: N/A
Q. 92
A man undertakes to do a certain work in 150 days. He employs 200 men. He finds that only a quarter of the work is done in 50 days. The number of additional men that should be appointed so that the whole work will be finished in time is
(A) 75
(B) 100
(C) 125
(D) 50
Answer: (B) 100
Explanation: N/A
Q. 93
A contractor undertook to finish a certain work in 124 days and employed 120 men. After 64 days, he found that he had already done (2/3) of the work. How many men can be discharged now so that the work may finish in time?
(A) 40
(B) 48
(C) 50
(D) 56
Answer: (D) 56
Explanation: N/A
Q. 94
Some carpenters promised to do a job in 9 days but 5 of them were absent and remaining men did the job in 12 days. The original number of carpenters was
(A) 16
(B) 18
(C) 20
(D) 24
Answer: (A) 16
Explanation: N/A
Q. 95
A group of 4 mat-weavers can weave 4 mats in 4 days. At the same rate, how many mats would be woven by 8 mat-weavers in 8 days?
(A) 4
(B) 8
(C) 12
(D) 16
Answer: (D) 16
Explanation: N/A
Q. 96
If p men working p hours per day for p days produce p units of work then the units of work produced by n men working n hours a day for n days is
(A) p²/n²
(B) p³/n²
(C) n²/p²
(D) n³/p²
Answer: (D) n³/p²
Explanation: N/A
Q. 97
5 persons can prepare an admission list in 8 days working 7 hours a day. If 2 persons join them so as to complete the work in 4 days, they need to work per day for
(A) 10 hours
(B) 9 hours
(C) 12 hours
(D) 8 hours
Answer: (A) 10 hours
Explanation: N/A
Q. 98
A skilled, a half-skilled and an unskilled labourer work for 7, 8 and 10 days respectively and they together get Rs 369 for their work. If the ratio of their each day’s work is (1/3) : (1/4) : (1/6), then how much does the trained labourer get?
(A) Rs 164
(B) Rs 102.50
(C) Rs 201.50
(D) Rs 143.50
Answer: (D) Rs 143.50
Explanation: (1/3) : (1/4) : (1/6) = 4 : 3 : 2
Trained Labourer’s share = ((7 * 4)/(7 *4 + 8 * 3 + 10 * 2)) * 369 = 143.50
Q. 99
2 men and 1 woman together can complete a piece of work in 14 days, while 4 women and 2 men together can do it in 8 days. If a man gets Rs 600 per day, how much should a woman get per day?
(A) Rs 400
(B) Rs 450
(C) Rs 480
(D) Rs 360
Answer: (A) Rs 400
Explanation: N/A
Q. 100
A man and a boy received Rs 800 as wages for 5 days for the work they did together. The man’s efficiency in the work was three times that of the boy. What are the daily wages of the boy?
(A) Rs 44
(B) Rs 40
(C) Rs 56
(D) Rs 76
Answer: (B) Rs 40
Explanation: N/A