Time and Work problems
- 1. 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 Also asked in: GATE, CAT, Bank Exams, AIEEE, Bank PO, Bank Clerk
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.
- 2. 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 Also asked in: GATE, Bank Exams, Bank PO, Bank Clerk
Correct Answer: 40
- 3. 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
Correct Answer: 1000
- 4. 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 Also asked in: Bank Exams
Correct Answer: 40/3 days
- 5. 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 Also asked in: Bank Exams
Correct Answer: 20 mats
- 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 Also asked in: Bank Exams
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
- 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 Also asked in: Bank Exams
Correct Answer: 0.9
- 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 Also asked in: Bank Exams
Correct Answer: 5 days
- 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 Also asked in: Bank Exams
Correct Answer: 19
- 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 Also asked in: Bank Exams
Correct Answer: 25
More in Aptitude:
Alligation or MixtureApproximationAreaAverageBanker's DiscountBoats and StreamsCalendarChain RuleClockCompound InterestDecimal FractionDiscountElementary AlgebraFind the Missing CharacterHeight and DistanceLinear EquationLogarithmLogicNumber SystemNumbersOdd Man Out and SeriesOrder of MagnitudePartnershipPercentagePermutation and CombinationPipes and CisternPlane GeometryProbabilityProblems on AgesProblems on H.C.F and L.C.MProblems on NumbersProblems on TrainsProfit and LossQuadratic EquationRaces and GamesRatio and ProportionSets and FunctionsSequential Output TracingSimple InterestSimplificationSquare Root and Cube RootStatisticsStocks and SharesSurds and IndicesTime and DistanceTime and WorkTrue DiscountUnitary MethodVolume and Surface AreaWork and WagesProgramming
Copyright ©CuriousTab. All rights reserved.