Question
A train of length 'y' meters
takes 20 seconds to pass a signal pole. It also crosses a bridge that is (y + 480) meters long in 80 seconds. Find the value of y.Solution
ATQ,
Speed of train = y / 20 m/s So, (y + y + 480) / (y / 20) = 80 2y + 480 = 4y 480 = 2y y = 240 So, the value of y is 240 meters.
18 skilled workers can complete a task in 12 days while 24 semi-skilled workers need 15 days to complete the same task. 12 skilled workers started the t...
Pawan and Qureshi can complete a task in 12 days, while Pawan and Rishi can finish the same task in 40/3 days. Initially, Pawan a...
When 24 men work for only 3 days, 5/6th of work remains unfinished. How much work will remain unfinished if 27 men work for only 2 days?
'X' and 'Y' can complete a certain job together in 36 days. They worked together for 20 days, after which 'X' left, and 'Y' completed the remaining work...
4 girls can do work in 8 days, 3 boys can do the same work in 9 days, 7 men in 2 days, and 5 women in 4 days. Who is the least efficient?
Veer can complete a work in X days and Ayush is 40% more efficient than Veer. If both complete 4/7th of work together and get Rs. 1200 for it...
The time taken by ‘A’ to complete a task is 6 days more than the time taken by A and B together. If A is twice as efficient as B, find the time requ...
A and B can complete a task in 6 days working together. A alone works twice as fast as B. If A works alone for 2 days and B finishes the rest, how many ...
‘A’ and ‘B’ together can complete a work in 10 days, while ‘B’ and ‘C’ together can complete the work in...
Billy, Tony and Mike were three workers, employed by a Contractor. They completed the whole work in 20 days. Initially all of them worked together, but ...
