Question
In a community of 2800 people, 55% are males and 45% of
them are literate. If 35% of the total population is literate, what percentage of the women are illiterate?Solution
ATQ, Number of illiterate males = 0.55 × 0.55 × 2800 = 847 Number of illiterate females = (0.65 × 2800) – 847 = 973 Total number of females = 0.45 × 2800 = 1260 Required percentage = (973/1260) × 100 = 77.22%
A train 500 m long running at 108 km/hr takes 40 seconds to cross a bridge. The length of the bridge is
A train 200 m long passes a man standing on a platform in 8 seconds. It then passes a bridge of length 300 m. How long does it take to cross the bridge?
A train 200 m long crosses a platform 250 m long in 18 seconds. The speed ratio of this train to another is 5:7. What is the length of the other train i...
Train 'A' is 480 meters long and crosses a pole in 24 seconds. It also crosses Train 'B' in the opposite direction in 12 seconds. If Train 'B' is twice...
- Length of a train, whose speed is 48 km/h, is 240 metres. Find the time taken (in seconds) by train to cross a bridge of length 360 metres.
A person is walking at 4 m/sec in the same direction of a train. The train crosses him in 7 seconds. If train speed is 72 km/hr, find the time to cross ...
Two cars start from a place with a speed of 60 km/hr at an interval of 15 minutes. What is the speed of a man coming from the opposite direction towards...
A train moving at 72 km/h takes 20 seconds to pass a pole. Find the time required for the train to cross a platform that is 0.6 times the length of the ...
A train 420 metre long takes 21 sec to cross a man running at a speed of 3 km/hr in the direction same to that of train. What is the speed of the train?
A high-speed Bullettrain takes 20 seconds to cross a platform. The length of the Bullettrain is 40% less than the length of the platform. If the Bullett...