Question
Five numbers are arranged in decreasing order. The
average of the first four numbers is 60, and the average of the last four numbers is 55. What is the difference between the first and the last number?Solution
A train covers a distance of 40 km at the speed of 30 km/h the next 33 km distance covers with a speed of 44 km/h and last 80 km with the speed of 64 km...
A can complete a work in 15 days, and B can complete the same work in 20 days. If they work together for 6 days, what fraction of the work is left?
If a car runs at 40 km/hr, it reaches its destination late by 12 minutes but if runs at 48 km/hr it is late by 8 minutes. What is the correct time for t...
Speed of a car and a bus is 20 km/h and 10 km/h, respectively. If the time taken by the car to cover a distance of ‘8x’ km is 1 hour less than time ...
The two places are 60 km apart. A and B start walking towards each other at the same time and meet each other after 6 hours. Had A traveled with 2/3rd o...
A man is travelling at a speed of 60 km/h such that he will take 80 minutes to reach his destination. But after completing half the journey, the man too...
A biker travels first half of his journey with a speed of 18 km/h and the other half with a speed of 'x' km/h. If the total distance traveled by him is ...
If a man covers a distance in 1 hour, walking at a speed of 5 km/hr, how long will it take him to cover 15 km?
A thief is spotted by a policeman from 800m. When the policeman starts chasing, the thief also starts running. If the speed of the thief is 32km/h and t...
A 725 m long train passes a tunnel 235 m long in 48 seconds. Find the speed of the train.
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