P is 20 percent more than Q and Q is 30 percent less than R. If P is 420, then What is the value of R?

A person could save 20% of his income. A year later, his income increased by 25% but he could save the same amount only as before. By what percentage has his expenditure increased?

Under a discount scheme, a dozen pair of gloves quoted at ₹200 is available at a discount of 20%. How many pairs of gloves can be bought for ₹320?

The ratio of 45% of 80% of A to 30% of 40% of B is 15: 4. If the average of A and B is 67.5, what is the value of AB?

The price of diesel increases by 5% every year. If the current price of diesel is ₹80 per litre, then what will be the price of diesel per litre after 2 years?

The marked price of a table is 130% of its cost price. A discount of 20% is given on the sale of the table. What will be the profit percentage?

In a competitive exam, the minimum qualifying percentages for Category A and Category B jobs are 25% and 45%, respectively. A candidate scored 83 marks and failed to get a Category B job by 25 marks. What is the minimum qualifying marks to secure a Category A job?

The population of a city in the year 2020 was 2,00,000. The rate of growth of population is 8% per annum. Find the population of that city in the year 2022.