Ratios And PercentagesPractice Questions

A can complete a work in 20 days and B in 30 days. They work together for 8 days, after which A leaves. In how many more days will B complete the remaining work?

The ratio of milk to water in a mixture is 5:3. If 16 liters of water is added to the mixture, the ratio becomes 5:7. What was the initial quantity of mixture?

A dishonest trader uses a weight of 900g instead of 1 kg while selling goods. What is his profit percentage if he sells at cost price?

A machine costing ₹100,000 depreciates at 10% per annum. What will be its value after 2 years?