The two laws of reflection of light are applicable to sound waves as well. The incident wave, the normal to the reflecting surface and the reflected wave at the point of incidence lie in the same plane.
‘A’ alone can do some work in 25 days. ‘B’ and ‘C’ together can do the same work in 10 days. If ‘B’ is half as efficient as ‘A’, the...
A and B together, B and C together and A and C together can complete a piece of work in 14 days, 15 days and 18 days respectively. Find the ratio of the...
A can complete a work in 30 days. B takes 6 days less than A to complete the same work. In how many days can both of them together complete 90% of the w...
A can do a piece of work in 28 days, while B can do the same piece of work in 42 days. They begin working together and 6 days before completion of work,...
35 typists working 9 hours per day can complete a typing job in 14 days. ____ typists working _____ hours per day can complete (3/4)th part of the work ...
Amit manages to reach 25% of a sales goal in 6 days, whereas Geeta can achieve 40% of the same goal within the same timeframe. How long would it take fo...
A, B and C alone can complete a work in 30, 60 and 45 days respectively. All of them started working together but after 3 days from start A left the job...
Ashish and Anil can do a piece of work in 10 days and 15 days respectively. Ashish completed 40% of the work. Find the time taken by Anil to complete th...
P can do a piece of work in 15 days, Q can complete double the work in 40 days and R can do the work in 20 days. If all of them together earn Rs. 3000, ...
Amisha is 50% more efficient than Khushi. Amisha started a work, worked for 'w' days and then Khushi replaced Amisha. khushi completed the remaining wor...
