Learning category
Useful concepts and preparation material for competitive examinations.
Q. A person covers half of a journey at 40 km/h and the remaining half at 60 km/h. What is his average speed for the whole journey? Options: A) 45 km…
Q. A trader marks an article 25% above its cost price and then gives a discount of 10% on the marked price. What is his profit percentage? Options: A…
Q. A can complete a work in 18 days and B in 9 days. If both work together for 3 days, what fraction of the work remains? Options: A) 1/3 | B) 1/2 |…
Q. A train 180 metres long is travelling at 54 km/h. How much time will it take to cross a pole? Options: A) 10 seconds | B) 12 seconds | C) 15 secon…
Q. An article is sold for ₹760 at a loss of 5%. What is its cost price? Options: A) ₹780 | B) ₹800 | C) ₹820 | D) ₹840 ✅ Answer: B) ₹800 (CP = SP ÷ 0…
Q. A completes 2/5 of a work in 8 days. In how many days can A complete the entire work at the same rate? Options: A) 16 days | B) 18 days | C) 20 da…
Q. Convert a speed of 54 km/h into metres per second? Options: A) 12 m/s | B) 15 m/s | C) 18 m/s | D) 20 m/s ✅ Answer: B) 15 m/s (Multiply by 5/18: 5…
Q. A shopkeeper gains ₹240 by selling an article for ₹1,440. Find the gain percentage? Options: A) 15% | B) 18% | C) 20% | D) 24% ✅ Answer: C) 20% (C…
Q. A can do a piece of work in 20 days and B can do it in 30 days. What fraction of the work will they complete together in 6 days? Options: A) 1/3 |…
Q. Two cities are 360 km apart. A bus travels from one city to the other at 60 km/h. How long will the journey take? Options: A) 5 hours | B) 6 hours…
Q. An article marked at ₹2,000 is sold at a discount of 10%. If its cost price is ₹1,500, what is the profit percentage? Options: A) 15% | B) 18% | C…
Q. 12 workers can complete a job in 18 days. How many days will 9 workers take to complete the same job, assuming equal efficiency? Options: A) 20 da…