Question
P can do a piece of work in 10 days, Q can complete
double the work in 30 days and R can do the work in 20 days. If all of them together earn Rs. 3900, then find the money received by Q.Solution
Time taken by P = 10 days Time taken by Q = 15 days Time taken by R = 20 days Let the total work be 60 units. P’s one day work = 6 units Q’s one day work = 4 units R’s one day work = 3 units Amount received by Q = 3900 × (4/13) = Rs. 1200
The average speed of a bus is 6/7 of the average speed of a car which covers 3500 km in 60 hrs. What is the average speed of the bus?Â
Arijit, Benny, and Chetna together can complete a work in 12 days. If the ratio of the efficiency of Arijit, Benny, and Chetna is 8:5:6, respectively, t...
- Find the distance covered (in km) by Rina in 5 hours if her speed is 20 m/s.
How far will 'Neha' travel by the time she catches up to 'Simran', given that 'Neha' starts 75 km behind and moves at 60 km/h while 'Simran' moves at 45...
- Two ships ‘M’ and ‘N’, which were 1020 km apart, started traveling towards each other at the same time and met after 6 hours. If the speed of ship ...
- Nisha travels the first half of her journey at a speed of 80 km/hr and the second half at the speed of ‘x’ km/hr. If her average speed for the entire t...
The speed of a train is 108 km/hr and it takes 14 seconds to cross a man. Find the time taken by train to cross a platform if the ratio of the length of...
A car completes a journey in 6 hrs with a speed of 50 km/hr. At what speed must it travel to complete the journey in 5 hrs?
'A’ and ‘B’ started moving towards each other at same time with a speed of 8 km/hr and 10 km/hr, respectively. If the distance covered by ‘A’ ...
Two vehicles, named as 'X' and 'Y', travel along side-by-side paths but in opposite directions. The length of vehicle 'Y' surpasses that of 'X' by 12.5%...