Time and Work

1. If a car can drive 25 km on two litters of octen, how many litters will be needed for a trip of 150 km?

• ক. 12
• খ. 3
• গ. 6
• ঘ. 7

2. 20 men can finish a work in 30 days. After how many days should 5 men leave the work so that the work may be finished in 35 days?

• ক. 10
• খ. 12
• গ. 15
• ঘ. 20

3. If 6 workers can complete 9 identical job in 3 days, how long (in days) will it take 4 workers to complete 10 such jobs?

• ক. 5
• খ. 4
• গ. 6
• ঘ. 3

4. Rumi and Rony can finish a task working together in 12 days. If Rony alone can finish that in 20 days, how many days will Rumi need to finish the task working alone?

• ক. 30
• খ. 20
• গ. 25
• ঘ. 33

5. A machine produces 1000 units of plastic chair per hour. Working continuously at this rate how many plastic chair will this machine produce in a week?

• ক. 7000
• খ. 68000
• গ. 268000
• ঘ. 168000

6. A cake is put in the oven at 7.20 am. If the cake takes three quarters of an hour to bake, at what time should it be taken out of the oven?

• ক. 8 : 10 a.m
• খ. 8 : 05 a.m
• গ. 8 : 15 a.m
• ঘ. 7 : 50 a.m

7. An empty pool is being filled with water at a constant rate. It takes 9 hours to fill 3/5 th of the pool. How much more time will it take to compeletely fill the pool?

• ক. 15
• খ. 9
• গ. 10
• ঘ. None of these

8. If 15 women working at the same rate can produce 25 dolls in an hour, how many dolls would 20 women make in 45 minutes?

• ক. 20
• খ. 25
• গ. 30
• ঘ. 50

9. Faruk can do a work in 12 days and Salam can do the same work in 8 days. If Faruk, Salam and Babu work together, they can complete the work in 4 days. How many days will it take Babu to complete the work alone?

• ক. 16
• খ. 20
• গ. 24
• ঘ. 32

10. A laborer is paid Tk.20 per hour for an 8-hour day. If he works overtime (above 8 hours) in a single day, he is paid 1.5 times the rate he is paid for regular hours. If the laborer receive Tk.200 for a single day's work. How long did he work on that day?

• ক. 9 hours 20 minutes
• খ. 8 hours 50 minutes
• গ. 6 hours 20 minutes
• ঘ. 9 hours 50 minutes

11. A and B together can paint a wall in 3 days. A can do it alone in 5 days. How many days would it take B to do this job alone?

• ক. 0.5
• খ. 7.5
• গ. 5.0
• ঘ. 6.4

12. Karim and Babu can build a wooden table in 3 days. Babu can do it alone in 5 days. How many days would it take Karim to do this job alone?

• ক. 0.2
• খ. 7.5
• গ. 5.0
• ঘ. 6.4

13. A mechanic repairs 4 cars in 5/3 hours. How many cars can he repair in 50 minutes?

• ক. 2
• খ. 21/3
• গ. 22/3
• ঘ. 25/3

14. A television service centre can process 8 television in 18 minutes. How many televisions can it process in 3 houres at this rate?

• ক. 150
• খ. 45
• গ. 80
• ঘ. 60

15. Faruk can complete a task in 20 days. He gets 2 assistants- each of whome can work as fast as he does. If all of them work together for 5 days, what percentage of the task will be complete?

• ক. 40%
• খ. 50%
• গ. 60%
• ঘ. 66.66%

16. Six men can complete a work in 5 days if they work for 8 hours per day. How many days will 4 men take to do the same work if they work only 5 hours per day?

• ক. 12
• খ. 16
• গ. 24
• ঘ. 32

17. A and B can do a work in 12 days. B and C can do it is 15 days and A and C can do it in 20 days. If all of them work together, in how many days they can finish the work?

• ক. 25
• খ. 9
• গ. 12
• ঘ. 10

18. If n photocopier makes 2 copies in 1/3 second, at the same rate how many copies does it make in 4 minutes?

• ক. 1440
• খ. 480
• গ. 576
• ঘ. 720

19. After working for a total of 4 hours at temporary job we work told that we had just completed 1/4 of the task. How much longer in hour should it take us to finish the entire job?

• ক. 1
• খ. 16
• গ. 8
• ঘ. 12

20. If a worker can packs 1/6 of a carton of canned food in 15 minutes and there are 40 workers in a factory, how many cartons should be packed in the factory in 5/3 hours?

• ক. 33
• খ. 362/9
• গ. 391/9
• ঘ. 400/9

21. If 15 men can reap a field in 35 days, in how many days will 21 men reap the field?

• ক. 49 days
• খ. 9 days
• গ. 25 days
• ঘ. 175/6 days

22. If 15 men working at the same rate can manufacture 27 baskets in an hour, how many baskets would 45 men manufacture in 40 minutes?

• ক. 37
• খ. 54
• গ. 35
• ঘ. 40

23. A time study specialist has set the production rate for each worker on a job at 22 units every therre hours. At this rate, what is the minimum number of workers that should be put on the job, if at least 90 units are to be produced per hour?

• ক. 5
• খ. 8
• গ. 12
• ঘ. 13

24. K produces 100 parts twice as fast as G does. G produces 100 parts in 40 minutes. If each produces parts at a constant rate, how many parts will K produces in 6 minutes?

• ক. 30
• খ. 25
• গ. 20
• ঘ. 15

25. Mr. X can finish a work in 6 days and Mr. Y can finish the same work in 8 days. How long will it take to finish the work together?

• ক. 7 days
• খ. 6 days
• গ. 8 days
• ঘ. 24/7 days