A certain number of men can do a work in 50 days. If there were 3 men more it could be finished in 5 days less. How many men are there?
Two buses, Himachal roadways, and Haryana roadways start at the same time from Himachal and Haryana respectively towards each other. They take 16 hours and 4 hours to reach Haryana and Himachal after passing each other. If the Himachal roadways are moving at the speed of 42 km/h, then what is the speed of Haryana roadways?
The angle of elevation of the chimney of a house from a cat on the ground is 300. The height of the house is 12 m. Find the distance between chimney and cat.
What is the value of [(1 – cos2)cosec2 + cot2] (sin2 + 1) and 00 < < 900?
The amount of work in a factory is increased by 50%, by what percent is it necessary to increase the number of workers to complete the new amount of work in planned time, if the new workers are 25% more efficient than previous ones?
If factory A turns out x cars an hour and factory B turns out y cars every 2 hours, the number of cars which both factories turned out in 8 hours is?
There is a sufficient food for 200 men for 36 days. After 33 days 140 men leave the place for how many days will the rest of the food last for the rest of the men?
How long will a boy take to skate around a rectangular park of side 1200 m × 1500 m if his speed is 12 km/h?
A 140 m long Bus crosses a signal pole in 5 sec while crossing a man sitting in another Bus going in some direction in 8 sec. Find the speed of another train?
A distance of 12 km is covered by a tortoise in 4 hours more than by a rabbit. If the average speed of tortoise is 4 kmph less than that of a rabbit, then what is the average speed of rabbit?
