Percentage and Profit & Loss

Out of 120 students, 70% students passed in math and 80% students passed in English. If only 12 students failed in both subjects. How many students passed only in English?

Jafar paid Tk. 100 tax. If X was his income then which of the following statements is true?

A person buys certain number of marbles at 20 per taka and an equal number at 30 per taka. He mixes them and sells them at 25 per taka. His gain or loss in the transaction is-

What is 10% of y/3, if 2y/3 is 10% of 400?

A student multiplied a number by 3/5 instead of 5/3. What is the percentage error in the calculation?

A school only 3 classes having 20, 30 and 40 students respectively. The percentages of students passed are 30%, 50% and 60% respectively. Find the percentage of passed students of the entire school.

The ratio of the cost of two articles is 7 : 3 . The first one was sold at a loss of 20% and the second one was sold at a gain of 40% What is the overall percentage of gain/loss?

What will be the fraction of 4% 

Nafiza bought a ticket of a cricket match for Tk. 25 and later sold the ticket to Raida for tk. 75. What was the percent increase in the price of the ticket?

An employee's annual salary was increased $15,000. If her new annual salary now equals $90,000, what was the percent increase?

0.01 is what percent of 0.1?

Lubana purchases 20kg of pulses at a rate of Tk. 14.25 per kg and 30kg of pulses at a rate of Tk. 11.50 per kg. She decided to mix the two and sold the mixture. To make a profit of 30%, what price per kg should he sell the mixture?

A man paid tax on 9000 Taka at 30%. He paid the tax in 12 equal payments. Each payment was

A ball and a bat costs 110 taka. The bat costs 100 taka more than the ball. How much does the ball cost?

What percent of 1/2 is 12/16? 

When heated an iron bar expands 0.2%. If the increased length is 1 cm, what is the original length of the bar?

The sum of principal and simple interest of a certain amount of money would be Tk. 460 after 3 years from now and Tk. 500 after 5 years from now. What is the total interest rate?

A wholesaler bought 1200 radios for Tk. 18 each. The wholesaler sold 60 percent of the radios for Tk. 30 each and the rest for Tk. 15 each. What is the wholesaler's average (arithmetic mean) profit per radio?

If 61% of Bangladeshi people like coffee and 74% like tea, how many like both?

If each side of a rectangle is increased by 50%, its area will increase by -