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- Question
If 5 person together can make 5 mats in 5 hrs, then 10 person in 10 hours will make
Options- A. 20 mats
- B. 10 mats
- C. 15 mats
- D. 5 mats
- Correct Answer
- 20 mats
- 1. A does 1/2 as much work as B and C does1/2as much work as A and B together. If C alone can finish the work in 40 days, then together all will finish the work in
Options- A. 30 days
- B. 40/3 days
- C. 15 days
- D. 16 days Discuss
- 2. Robin can do a work alone in 9 days. Amit can do the same work alone in 6 days. Both of them finish the work together and they get a total Rs 2500. What isthe share (in Rs) of Robin?
Options- A. 1700
- B. 1200
- C. 1500
- D. 1000 Discuss
- 3. 50 men can complete a work in 28 days. They started the work together, but at the end of each 10th day, 10 men left the job. The work was completed in how many days?
Options- A. 36
- B. 38
- C. 40
- D. 45 Discuss
- 4. 10 boys can complete a work in 7 days and 10 girls take 14 days to complete the work. How many days will 5 boys and 10 girls take to complete the work ?
Options- A. 13 days
- B. 10 days
- C. 7 days
- D. 16 days Discuss
- 5. A can do a piece of work in 21 days and B in 28 days. Together they started the work and B left after 4 days. In how many days can A alone do the remaining work ?
Options- A. 14 days
- B. 18 days
- C. 21 deays
- D. 16 days Discuss
- 6. In a fort there was sufficient food for 200 soldiers for 31 days. After 27 days, 120 soldiers left the fort. For how many extra days will the rest of the food last for the remaining soldiers?
Options- A. 12 days
- B. 10 days
- C. 8 days
- D. 6 days Discuss
- 7. A labourer can do a job in 50 hours. After 5 hours he takes a break. What fraction of the job is yet to be done?
Options- A. 0.8
- B. 0.5
- C. 0.75
- D. 0.9 Discuss
- 8. If 10 people can do a job in 20 days,then 20 people with twice the efficiency can do the same job in
Options- A. 5 days
- B. 10 days
- C. 20 days
- D. 40 days Discuss
- 9. A is 1.5 times efficient than B therefore takes 8 days less than B to complete a work. If A and B work on alternate days and A works on first day, then in how many days the work will be completed?
Options- A. 17
- B. 19
- C. 19.5
- D. 21 Discuss
- 10. If Mr. Raghav taught a total of 500 hours, then what is the difference in number of hours of teaching algebra and modern Maths?
Options- A. 15
- B. 20
- C. 25
- D. 40 Discuss
Time and Work problems
Search Results
Correct Answer: 40/3 days
Correct Answer: 1000
Correct Answer: 40
Correct Answer: 7 days
Explanation:
1 boy's 1 day work = 1/70
1 girl's 1 day work = 1/140
(5 boys + 10 girls)'s 1 day work = (5/70 + 10/140) = (1/14 + 1/14) = 1/7
5 boys and 10 girls will complete the work in 7 days.
Correct Answer: 14 days
Explanation:
Let A worked for x days.
x/21 + 4/28 = 1 => x = 18
A worked for 18 days. So, A can complete the remaining work in 18 - 4 = 14 days.
Correct Answer: 10 days
Explanation:
Quantity of food = 200 X 31 = 6200 man-days
Till 27 days, quantity consumed = 27 X 200 = 5400 man-days
Remaining quantity = 6200 ?5400 = 800 man days
Remaining soilders = 200 ?120 = 80
Let remaining food will be sufficient for x days?5400 + 80x = 6200?x= 10 days
Correct Answer: 0.9
Correct Answer: 5 days
Correct Answer: 19
Correct Answer: 25
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