Q1:

The ratio of the cost price to the selling price of an article is 20: 21. If the cost price of the article is decreased by 15% and selling price is increased by 20%, find the new profit percent? 

Q2:

If the selling price of a guitar is $\frac{3}{5}$ times more than its cost price, find the percentage of profit earned on guitar.

Q3:

If the cost price of 10 earphones is equal to selling price of 9 earphones, find the gain or loss percent in the transaction?

Q4:

A real estate broker makes a profit of 10% of all the sales. How many plots of Rs 50,000 will he have to sell to earn a total of a commission of Rs 60,000?

Q5:

Ashish sold a good for Rs 250 and incurred a loss. Next time he sold the same good for Rs 775 at a profit which is 20 times the loss. Now if he wants to earn a profit of 20%, what should be the selling price of article?

Q6:

Dream Pies, a confectionary store purchase eggs at the rate of 11 eggs for Rs 10 and sell them to customers at the rate of 10 eggs for Rs 11. Find the percentage of profit they earn?

Q7:

A man sells 2 bulls for Rs 1500 each. He gains 20% on one and loses 20% on the other. Which of the following is true for this transaction?

Q8:

While doing some calculations for a scientific experiment, a man multiplied a number by $\frac{3}{5}$instead of$\frac{5}{3}$. Find the percentage error in the final result?

Q9:

A man bought a watch for a discount of 10%. If he had bought it for a discount of 20% he would have got the watch for Rs 125 less. Find the price of the watch when no discount was offered on it.

Q10:

A man had two bikes, which he purchased at the same price. He sold one of them at profit of 10%. He sold the other at a price which was two times the selling price of the first bike. Find his profit percentage for the second bike.

Q11:

Ajeet is the owner of a famous confectionery store. He professes to sell his sweets at cost price but uses a false weight and earns a profit of 20%. What weight does he use instead of 1 kg?

Q12:

Dev purchased some tattoos and sold them. He sold them at 12 tattoos for a rupee and had a loss of 20%.For how much amount should he sell 12 tattoos to earn a profit of 20%?

Q13:

Due to change in norms by a government, an automobile dealer was needed to immediately clear stocks. He further told that by selling 9 bikes, he was losing the money equal to the selling price of 1 bike. Find his percentage loss?

Q14:

The cost of 400 sacks of rice, each at Rs $12\frac{1}{2},$ together with dealer’s commission amount to Rs 5100. What is the percentage of profit of the dealer?

Q15:

A deal offers three successive discounts of $50\%$ $20\%$ and $10\%$ on an article. What is the single effective discount rate?