Time and Work

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?-7.5
If n photocopier makes 2 copies in 1/3 second, at the same rate how many copies does it make in 4 minutes?-1440
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?-30
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?-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?-168000
A man works twice as much as his assistant. The man can finish the job in 12 days. Find the number of days in which the man and his assistant can finish the job if they work together?-8
A, B and C can complete a pice of work in 24, 6 and 12 days respectively. Working together, they will be complete the same work in:-24/7 days
Some persons can do a pice of work in 12 days. Two times the number of such persons will do half of that work in:-3 days
If a woman is paid Tk.m per hour every hour she works up to 8 hours and is paid double for every hour she workes after 8 hours, how much Tk will she be paid for working 13 hours?-18m
Ram can do a job in 20 days while Sham can do the same job in 25 days. After working for 10 days together, Sham left and Ram finished the job. How many days did Ram take to finish the job?-2
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?-54
Nazir can wash his car 15 minures while his son takes twice as long. If they work together how many minutes will the job take them?-10
A typist can type 125 pages, 36 lines each, 11 words in each line in 5 days. How many pages of 30 lines each and 12 words to each line can he type in 6 days?-165
A mechanic repairs 4 cars in 5/3 hours. How many cars can he repair in 50 minutes?-2
If a car can drive 25 km on two litters of octen, how many litters will be needed for a trip of 150 km?-12
If 18 identical machines required 40 days to complete a job, how many fewer days would have been required to do the job if 6 additional machines of the same type had been used from the beginning?-10
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?-7.5
One worker can do a job in n hours, while it takes a second worker m hours to do the same job. How long does it take both workers?-mn/(m + n)
Three pipes are used to fill a pool with water. Individually they can fill the pool in 9 hours, 6 hours and 3 hours. How many minutes will it take to fill the pool if three pipes are used simultaneously?-98
If ‘x’ men can do a work in 8 days and ‘x + 4’ men can do it in 6 days, what is the value of ‘x’?-12
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?-None of these
If it takes 50 workers 4 hours to dig a hole, how long should it take 30 workers to dig the same hole?-6 hours 40 minutes
A, B and C started a job which they can complete in 2 days. B can do the job in 5 days and C can do it in 4 days. After working for 1 day, both B and C left. How long would it take A to complete the rest of the job?-10 days
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?-24/7 days
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?-13
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?-25
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?-50%
A man and a boy can finish a job working together for 4 days. The man can work as much as two boys can do. Then in how many days can the man do it alone?-6
If m men can do a job in 10 days, how many days it will take for 10 men to complete the job assuming that they work at the same rate?-m
If 15 men can reap a field in 35 days, in how many days will 21 men reap the field?-25 days
If Salam makes a box every 5 minutes and Kalam takes 7 minutes to make a box, what will be the ratio of the number of boxees produced by Salam to the number of boxes produced by Kalam if they work for 5 hours and 50 minutes?-7 to 5
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?-24
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?-16
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?-10
A television service centre can process 8 television in 18 minutes. How many televisions can it process in 3 houres at this rate?-80
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?-400/9
If 8 men can do a job in 12 days, what is the percentage increase in the number of days required to do the job when 2 men are released?-33.33%
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?-9 hours 20 minutes
A clock slows down one minute every 24 hours. How long will it take to slow down by one hour?-60 days
A contractor employs 60 person for doing a job in 80 days. After 20 days it was found that only one-fifth of work was finished.How many more persons are to be employed to finish the job as per schedule?-20
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?-30
Mr. Shahin moved 3/4 th of his lawn in 5/4 hours. Mr. Ashique makes twice as fast and finishes the remaining job. How many minutes did Mr. Ashique work?-25/2
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?-15
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?-12
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?-8 : 05 a.m