Dr. K. Kautilya Solutions for Chapter: Mathematical Aptitude, Exercise 7: Exercise

Dilip buys a radio at $\frac{3}{4}$ of its value and sells it for $20\%$ More than its value. What is his gain $\%?$

Apples cost $5$ paise each. They are sold at $20\%$ profit. Find out the selling price of one dozen apples.

A merchant makes a profit of $20\%$ based on the selling price of an article, what profit does he make based on the cost?

If prices are reduced by $25\%$ and the sales go up by $20\%,$ what affects the total money received?

When the price of a heater was increased by $20\%,$ the number of heaters sold decrease by $20\%.$ What was the effect on sales?

A man sold an article for $₹7200.$ Thus bearing a loss of ${\frac{1}{4}}^{\mathrm{th}}$ of this cost. The cost of the article is:

A trader bears a loss of $25\%$ By selling $40$ Needles for a rupee. How many needles should he sell for a rupee in order to earn a profit of $20\%?$

What will be the gain or loss per cent if the cost price of $20$ article equals the selling price of $30$ pieces?