Let the sum invested be Rs. ‘P’ Therefore, interest earned in 5 years = 1.8P – P = Rs. 0.8P ATQ; 0.8P = (P × r × 5) ÷ 100 Or, r = 80 ÷ 5 Or, r = 16 So, required interest earned = (2500 × 16 × 2) ÷ 100 = Rs. 800
A car running with a speed of ‘x’ m/sec makes 5 rounds of a circular field having radius 42 metres, in 10 seconds. Find the time taken by ca...
A train crosses a pole in 12 sec, and a bridge of length 170 m in 36 sec. Then the speed of the train is:
The speed of a train is 36 km/hr and it takes 12 seconds to cross a man. Find the time taken by train to cross a platform if the ratio of the length of ...
A was travelling from point X to point Y. He increased his speed by 4 km/h after every hour. He reached his destination in 8 hours. If his initial speed...
The speed of a bike increases by 5 km/hr after every 1 hour. If the distance travelled by the bike in 1st hour is 10 km, the find the total distance tra...
A man travels some distance at a speed of 15 km/hr and returns at a speed of 9 km/hr. If the total time taken by him is 2 hrs 40 min, the distance is
500 metres long train crosses a man who is moving in the same direction with a certain speed, in 50 seconds. If the same train can cross a tree in 20 se...
A policeman saw a thief from a distance of 450 m. When the policeman started chasing him, the thief also started running. The ratio of speeds of the th...
A cheetah can catch a deer running with a speed of 36 km/h and is 45 meters ahead of it, in 12 seconds. Find the time taken by the cheetah to catch a ze...
Aman takes 36 minutes more than Sudhanshu to cover a distance of 130 km. If Aman doubles his speed, he takes 42 minutes less than Sudhanshu to cover the...
