Question
A policeman noticed a thief from 300 m. The thief
started running and the policeman was chasing him. The thief and the policeman ran at speeds of 8 km/h and 9 km/h, respectively. What was the distance between them after 3 minutes?Solution
3 min = 3 x 60 = 180 seconds Distance between policeman and thief in starting = 300 m The relative speed of policeman and thief if same directions = (9-8) = 1 =1x (5/18) = (5/18) m/sec Distance covered in 180 seconds = (5/18) x 180 = 50 m Distance between them after 180 seconds 300-50 = 250 m The distance between them after 3 min is 250 m.
A man purchased 'n' apples and sold them at Rs. 'n' per apple. If the selling price per apple had been reduced by 20%, the total profit he would have ea...
The rebate offered on a microwave oven is Rs. 1800, which is Rs. 900 lower than the gain made on its sale. If the purchase cost of the microwave is Rs. ...
A shopkeeper sells a badminton shuttle whose marked price is Rs 15, at a discount of 20% and gives a lollipop costing Rs 2.50 free with each shuttle. Ev...
A bought an article at 20% less of the marked price and sold it at 10% more than the marked price. Find the profit earned by him.
A shopkeeper marks an article at Rs 500. He allows a discount of 10% on the marked price but still makes a profit of 20% on the cost price. Find the cos...
A vendor claims to sell sugar at cost price but uses a faulty scale that shows only 900 grams as 1 kg. What is the approximate profit percentage he earns?
A shopkeeper sold an article at marked price and got a profit of 70%. If he had given a discount of 30%, then find his new profit percent.
- A seller marked an article 60% above its cost price and sold it after allowing 20% discount. If he made a profit of Rs. 56, then find the difference betwee...
The ratio of cost price to marked price of a bicycle is 3:4. It is sold for Rs. 5100 after a discount of 15%. Find the profit earned.
The marked price of a jacket is Rs. 1600. A discount of 10% is given. What is the selling price?
Relevant for Exams:
