A can complete in 2 days as much of a task as B can complete in 3 days and B can complete in 4 days as much of the task as C can complete in 5 days. In what time will A, B and C together complete the task if A alone can complete it in 22 days?
A man lent a part of ₹30,000 at the rate of 10% per annum and the remaining at the rate of 8% per annum simple interest. The total interest he received after 3 years is ₹8,280. Find the amount he lent at 10% per annum.
Supposing that the telegraph poles on a railroad are 50 m apart, how many poles will be passed by a train in 4 h if the speed of the train is 45 km/h?
(Include both the poles at the starting point as well as the one at the end of the journey in your count)
The height of a house is h and 5.2 m long ladder is just sufficient to go at the top of the house when its inclination with the horizontal ground is 45°. Find the height of the house.
A car travels a distance of 300 km at a uniform speed. If the speed of the car is 5 km/h more, it takes 2 h less to cover the same distance. Find the original speed of the car.
