The prices of two articles are in the ratio 3 : 2 respectively. The price of the first article is increased by 40% and that of the second article is decreased by x%. If the new ratio of both the articles is : 7 : 3 then what is the value of x?

Price of sugar rises by 20%. By how much percent should the consumption of sugar be reduced so that the expenditure does not change?

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.

Two numbers are more than the third number by 20 % and 50 % respectively. Find the first number is what percent of the second number? 

The cost of an article was 75. The cost was first increased by 20% and later on it was reduced by 20%. The present cost of the article is:

What is the difference between 0.6 and 0.6%?

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?

The monthly income of a person was ₹ 13,500 and his monthly expenditure was ₹ 9,000. Next year his income increased by 14% and his expenditure increased by 7%. The per cent increase in his savings was