A boy can swim a certain distance downstream in 5 hours and return in 7 hours. If the rate of stream is 4 kmph then what is the speed of boy in still water?
Let the speed of the boy in still water be x kmph. Then, (x + 4) × 5 = (x – 4) × 7 => 5x + 20 = 7x - 28 => 2x = 48 => x = 24 kmph
Mohan bought a new car from the showroom and after one year he sold it to Shyam at a profit of 20 percent. Shyam sold the same car to Sumit at the loss...
A, B, and C started business by investing Rs 2500, Rs 3000, Rs 4000. After 8 months B decreased his investment by Rs. _________. If the annual profit re...
A seller marked his article 60% above the cost price and sold it after offering two successive discounts of 50% and 20% respectively. In the whole trans...
A trader marked an article 70% above its cost price and sold it after allowing a discount of 40%. If the transaction resulted in a profit of Rs. 40, the...
A shopkeeper sells an article at profit of 20% and uses a weight of 25% less instead of 1 kg. Find his actual profit?
A sold a car to B at 8% profit, who later sold it back to A at 6% loss. If initially A purchased the car for Rs. 250000, then find the total profit earn...
Deepak sells all his goods available in his shop at the cost price, but he cheats on his customers and gives 25% fewer goods than he should give. Find h...
P purchased a book from registered store and gets 14% discount while Q purchased the same book from a roadside stall and got 19% discount. If Q paid Rs....
A shopkeeper selling an item for Rs.(a + 500), and suffered a loss of 20%. suppose he sells it for Rs.(2a – 500), he will make a profit of 20%. Find t...
Article 'S' is sold at a profit of 15% which earns a profit of Rs. 450. If Article 'S' is marked 30% above its cost price and then sold after offering t...
