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Let speed of train Y be 'a' km/hr. According to question, => 15(30 + a) × (5/18) = 500 => 450 + 15a = 1800 => 15a = 1350 => a = 90 km/hr
‘A’ and ‘B’ can do a piece of work in 25 days and 30 days, respectively. If they started the work together and worked on it for 8 days, then fin...
‘A’ can complete a work in 18 days and is 10% more efficient than ‘B’. ‘A’ and ‘B’ start the work together, but ‘A’ leaves after 15 ...
John does ½ piece of work in 3 hours, Joe does ¼ of the remaining work in 1 hour and George finishes remaining work in 5 hours. How long w...
A buffalo alone can plough field ‘A’ in 40 days. A Bull alone can plough the field ‘A’ in 80 days. Find the number of days taken by 3 bulls and ...
(x) men can do some work in 42 days. If 10 more men added then the work would have been completed in 30 days, then in how many days (x+45) men can do th...
A and B together can complete a work in 12 days, and B alone can complete it in 20 days. How many days will A take to complete the work alone?
In an office, an employee plans to do a work in 15 days with 6 laptops. But after 8 days, he found that only 50% of the work is done with the laptops wo...
Karan, Arjun and Krunal alone can complete a work in 50, 75 and 60 days respectively. All of them started working together but after 9 days from start K...
30 men can complete a task in 160 days. 12 men start the work and manage to do half of it. Then, 18 more men are added to the team to help finish the wo...
