Two students appeared for an examination. One student who scored 20 marks more than the other, his score was 60 % of the sum of their marks. What was his score?

Difference of two numbers is 1890. If 12.5% of one number is 17.5% of the other number, Find the two numbers.

A businessman’s earning increases by 25% in one year but decreases by 4% in the next. After 5 years his total earnings would be Rs. 72,000. What is the present earning?

What is the difference between 0.6 and 0.6%?

A basket contains 350 eggs. If 12% of the eggs are rotten, how many eggs are good enough to be sold?

If 50% of (x −y) = 30% of (x + y), then what percent of x is y? 

75% of a number is equal to three-seventh of another number. What is the ratio between the first number and the second number respectively?

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.