The average monthly salary of all the employees in a company is ₹ 12,000. Among them the average salary of male employees is ₹15,000 and that of female employees is ₹8000. Accordingly, what is the ratio of male and female employees?

A student was asked to find 3.5% of an amount, he mistakenly found 5.5% which was Rs.220, what would be the correct answer?

35 percent of a number is 1249.5. What is 78 percent of that number?

If the length of a rectangle is increased by 10% and the area is unchanged, then how much percent does the breadth decrease?

If the income of A is 25% more than that of B, then by what percent is the income of B less than that of A?

In an examination 60% of the students passed in English and 70% in Mathematics, if 20% of the students failed in both the subjects and 2500 students passed in both the subjects, then what is the total number of candidates?

If the purchase price of an article is equal to 80 percent of its selling price then there will be profit.

If x% of $${25\over 2}\%$$ is 150, then the value of x is :