Question
A can complete a certain work in 12 days, while B can
complete it in 15 days. After working together for 4 days, A leaves and B continues working alone. How many additional days will B take to finish the remaining work?Solution
A's work rate = 1/12, B's work rate = 1/15 Combined work rate = 1/12 + 1/15 = (5 + 4) / 60 = 9/60 = 3/20 Work done in 4 days = 4 * (3/20) = 12/20 = 3/5 Remaining work = 1 - 3/5 = 2/5 B's work rate = 1/15, so time taken by B = (2/5) / (1/15) = (2/5) * 15 = 6 days
- A discount of Rs. 1800 is offered on a washing machine, which is Rs. 700 less than the profit made on selling it. If the cost price is Rs. 2000, find the m...
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 shopkeeper tagged a gadget for Rs. 500 and sold it after allowing successive discounts of 10% and 25%. If his overall profit was Rs. 35, what was the cos...
The ratio between the cost price of product G and H is 8:7 respectively. Each of the products was marked 25% above its cost price. If the MRP of product...
A merchant labeled an item with a price 40% higher than the cost price and subsequently sold it with a discount of d%, resulting in a 5% profit. Determi...
- Arjun purchased a mobile phone and marked its price 75% higher than the cost price. He sold it after giving a 20% discount for Rs. 3600. What would be the ...
- A gadget was obtained at Rs. 1000 and improved for Rs. 600. It was marked 50% above the cost but later sold at a 10% loss. What is the discount given?
- A mobile phone was sold with a discount of Rs. 1200, which is Rs. 400 less than the profit earned. If its cost price is Rs. 800, determine the mark-up perc...
A shop seller offered a discount of Rs. 3500 on the marked price of a rice bag and earned a profit of 40%. If the difference between the cost price and ...
If the price of rice has increased from Rs 40 per kg to Rs. 60 per kg, by how much percent a person has to decrease his consumption so that his expendit...
