Class Name: Placement Readiness Online Aptitude Crash Course
Class Session: Work/Rate
Total Questions: 25 | Duration: 30 Mins
Mr. Joseph works 6 hours for 18 days. Find out his wages at the rate of Rs. 54 per hour.
Tom takes 1.5 hours to shear the meadow and Luzy takes 2 hours to shear the same meadow. How long will it take when Tom and Luzy work together to shear the meadow?
There are 3 pipes X, Y and Z. Pipe X alone takes 6 hours to fill the tank, pipe Y alone takes 8 hours to fill the same tank. Pipes X, Y and Z together can take 2 hours to fill the tank. Find the rate of pipe, Z.
Pump, A can fill a tank in 5 hours and pump, B in 8 hours. Pump, C can drain the water from the same tank in 20 hours. If pumps, A, B and C work together, how long will it take to fill the tank?
Taps A and B can fill a water pool in 3 hours and 6 hours respectively. Tap, A is started at 9 AM and tap, B at 10 AM. At what time will the water pol be filled?
A tank has 5 pipes, A, B, C, D and E. Pipes, A, B and C works at 1/2 the rate of each of the pipes, D and E. When all pipes working together, what fraction of time taken by the pipes D and E working together to fill the tank?
Rahul, James and Farikh together can finish a work in 3 hours, 4 hours and 5 hours respectively. Find the fraction of work done by Farikh, if all three work together to finish the work.
Machines P and Q working together, take x minutes to complete a work. Machine, A alone takes 64 minutes more than x and Machine, B alone takes 25 minutes more than x to complete the same work. Find the ratio of the time taken by machine P to the time taken by machine Q to complete the work?
Eight machines running at the same rate can produce 560 stickers in a minute. Find the number of stickers could produce in 6 minutes by 20 machines.
Ram can make a handcrafted silk saree in 4 weeks and Ravi can make a similar saree in 6 weeks. How many weeks will it take for them to produce 15 handcrafted sarees, if they both work together?
Machines X and Y are used to bind the books. Machine, X alone can bind 1500 books in 'M' hours. Machines, X and Y together can bind 1500 books in 'N' hours.In terms of M and N, how many hours does machine, Y alone take to bind 1500 books?
Machines A and B working together can produce 1 refrigerator in 3 hours. If machine, A's speed is doubled, machines, A and B working together can produce 1 refrigerator in 2 hours. How many hours does machine, A currently (at its ususal speed) take to produce 1 refrigerator when working alone?
Aand B can build a wall together in 2 hours, but A needs the help of two helpers in order to complete the same job in the same amount of time. If A and a helper works together, it will take them 4 hours to build the wall. Assume that rates for A, B and helpers remain constant, how many hours will it take when A, B and a helper working together to build the wall?
Raj and Ravi are asked to paint a office. Raj alone can complete the work in 12 hours and Ravi alone in 16 hours. How long will it take to complete the work, if they work together?
A water pool is attached with seven identitical outlet pumps. If these 7 pumps can empty the pool in 6 hours, then how many hours will it take for 4 pumps to make the pool empty?
Sam and Sun are advised to mail 1000 envelopes to their customers. Sun alone can complete the work in 6 hours. If they both work together, they can complete it in 4 hours. How long will it take for Sam alone to complete the work?
Pipe A can fill a water tank in 10 hours and pipe B can empty the tank in 15 hours. How long will it take to fill the tank, if both pipes are opened?
A can complete a construction work 3 times faster than B. Working together, they can complete the work in 5 days. How long will it take for A alone to complete the work?
Ram, Lakshman and Bharath are working in a project. Ram alone can complete the project in 6 hours, Lakshman alone in 9 hours and Bharath alone in 8 hours. How long will it take to complete the project, when they all work together?
Sheela amd Mary are sowing the seeds in their yard. Sheela alone can sow seeds in 8 hours and if they both work together can complete it in 5 hours. How long will it take for Mary alone to complete the work?
Painter Balu can paint a house twice as fast as Gopal. Working together, it takes 2 days to complete the work. How long will it take when Gopal alone working on a house?
Faucet, A can fill the water tub in 12 minutes and faucet, B can fill the tub in 18 minutes. But faucet, C can empty the tub in 24 minutes. How long will it take to fill the tub when all the faucets are opened?
Sam, Sun and Suji are ploughing the land. Sam alone can plough the land in 15 hours and Suji alone in 20 hours. If they all working together, they can plough the land in 6 hours. How long will it take for Sun alone to plough the land?
A and B are engaged in a work. A alone can complete a job in 8 hours and B alone in 9 hours. How long will it take, when they both work together?
Monisha can complete her project twice as fast as her team mate Nisha. When working together, they can complete the project in 45 minutes. If they work on their own, how long will it take for each of them to complete the project?