alleryTwenty men can pave a road in 18 days. To finish it in 12 days, the number of men required is
- 24
- 36
- 27
- 30
Show answer and solution
Correct answer: D. 30
The road needs 20 x 18 = 360 man-days, and 360/12 = 30 men.
SSC CGL Time and Work — practice questions — page 2
Explore 76 free Time and Work questions in SSC CGL Quantitative Aptitude. Open each question or exercise to read its content, reference answers and available explanation.
Practise Time and Work with Quill →Time and Work questions and exercises with answers
Showing questions 31–60 of 76.
Twenty men can pave a road in 18 days. To finish it in 12 days, the number of men required isRead the answer and worked solution →Ten women can finish a job in 24 days. After 6 days five women leave. The rest of the job takesRead the answer and worked solution →A team of 15 workers can finish a job in 30 days. After 10 days, 5 more workers join. The remaining work takesRead the answer and worked solution →Twelve men could complete a job in 20 days. After 5 days, 6 men leave. The remaining work takesRead the answer and worked solution →One man equals two women in work. Six men finish a job in 10 days. Eight women needRead the answer and worked solution →A man does as much as 3 boys. Two men and 6 boys finish a job in 9 days. How long would 12 boys take?Read the answer and worked solution →A can do a job in 15 days and B in 10 days. A works alone for 5 days, then B joins. B works with A forRead the answer and worked solution →A takes 10 days and B takes 15 days. Working on alternate days, A first, they complete the job inRead the answer and worked solution →If a worker completes one third of a job in 5 days, the whole job takes himRead the answer and worked solution →A mason completes 40% of a wall in 8 days. At this pace the whole wall takesRead the answer and worked solution →A labourer finishes 3/4 of a job in 15 days. To complete the remaining part he needsRead the answer and worked solution →Two pipes fill a tank in 20 and 30 hours, and a third empties it in 60 hours. All open, it fills inRead the answer and worked solution →A tank normally fills in 6 hours but a leak makes it 8 hours. The leak alone empties a full tank inRead the answer and worked solution →A pump fills a tank in 5 hours, but with a leak it takes 6 hours. The leak alone would empty it inRead the answer and worked solution →Pipes fill a tank in 8 and 12 hours. Both open for 2 hours, then the first closes. The second needs moreRead the answer and worked solution →A pipe adds 25 litres a minute, a leak drains 5 litres a minute. A 400 litre tank fills inRead the answer and worked solution →A task needing 20 man-hours is done by a team of 5 equally able people inRead the answer and worked solution →A job needs 60 man-hours. Six equally efficient workers will finish it inRead the answer and worked solution →Eight workers each put in 9 hours on a task. The man-hours spent in all areRead the answer and worked solution →The work of 4 men for 15 days equals how many man-days?Read the answer and worked solution →A task needs 240 man-hours. Working 8 hours a day, how many workers finish it in 5 days?Read the answer and worked solution →A task takes 100 man-hours. Five workers put in 4 hours a day, so it takesRead the answer and worked solution →Which of these is left out when counting man-hours?Read the answer and worked solution →The work performed by an average worker during one day is called aRead the answer and worked solution →Two bricklayers need 14 and 21 days respectively for a wall. Working together they needRead the answer and worked solution →A takes 6 days less than B alone, and together they finish in 4 days. B alone takesRead the answer and worked solution →P works three times as fast as Q, and P finishes 20 days sooner than Q alone. P alone needsRead the answer and worked solution →P is three times as efficient as Q, and together they finish in 15 days. P alone needsRead the answer and worked solution →A and B are paid Rs 1200 for a job. A alone does it in 6 days, B alone in 12 days. A getsRead the answer and worked solution →A, B and C take 10, 15 and 30 days alone and share Rs 3000 for working together. C getsRead the answer and worked solution →
Worked practice questions
Ten women can finish a job in 24 days. After 6 days five women leave. The rest of the job takes
- 24 days
- 36 days
- 30 days
- 40 days
Show answer and solution
Correct answer: B. 36 days
After 6 days, 18 days of work for 10 women (180 woman-days) remain, and 5 women need 180/5 = 36 days.
A team of 15 workers can finish a job in 30 days. After 10 days, 5 more workers join. The remaining work takes
- 18 days
- 15 days
- 12 days
- 10 days
Show answer and solution
Correct answer: B. 15 days
Remaining work is 15 x 20 = 300 worker-days, and 20 workers finish it in 15 days.
How to practise
- Choose a Time and Work question and try to work out your answer.
- Open the question to check the correct answer and read its worked solution.
- Continue in the app for bite-sized lessons, explanations and review with Quill. You can start without creating an account.
Put it into practice
Continue with Time and Work practice for SSC CGL. Read explanations as you go. No signup form needed to start.
Practise Time and Work →