Learning category
Useful concepts and preparation material for competitive examinations.
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…
Q. A man walking at 5 km/h reaches his destination in 3 hours. If he increases his speed to 6 km/h, how much time will he take? Options: a) 2 hours |…
Q. A trader sells an article for ₹1,080 at a profit of 20%. What was the cost price? Options: A) ₹850 | B) ₹880 | C) ₹900 | D) ₹960 ✅ Answer: C) ₹900…
Q. If the cost price of 15 articles is equal to the selling price of 12 articles, what is the profit percentage? Options: A) 20% | B) 25% | C) 30% |…
Q. A cyclist covers a distance of 45 km at a speed of 15 km/h. How much time does he take? Options: A) 2 hours | B) 2.5 hours | C) 3 hours | D) 3.5 h…
Q. A train moves at 72 km/h. How much distance will it cover in 25 minutes? Options: 25 km | 30 km | 32 km | 36 km ✅ Answer: 30 km (72 km/h = 1.2 km/…