Percentage and Profit & Loss

In a certain population group, 57% of the people have characteristics X and 63% have characteristics Y. If every person in the group has at lest one of the of the two characteristics, then what percent of the people have both X and Y?

Bus fares were recently increased from Taka 1.70 to Taka 2.00. What was the approximate percentage of increase?

75% of 0.08 = ?

Solution X contains 40% salt and 60% water by weights. Solution Y contains 25% salt and 75 % water. If a mixture of X and Y contains 30% salt, What percent of the weight of this mixture is solution X ?

If 45% of (A - B) is equal to 3/10 of (A + B), then what percent of A is B?

By what percentage above the cost price, a fan should be sold if a shopkeeper wants to make a profit of Tk. 500 and the marked price of the article is Tk 6000 which is 50% above the cost price?

In a class of 120 students, 70 percent can speak only Bengali and the rest can speak English. If 25 percent of those in the class who can speak English can also speak Bengali, how many of the students in the class can speak Bengali?

What percentage of numbers from 1 to 70 has 1 or 9 in the unit digits?

Two lots of onions with equal quantity, one costing Tk.10 per kg and the other costing Tk.15 per kg. are mixed together and whole lot is sold at Tk.15 per kg. What is the profit or loss? 

If 10% of x is equal to 25% of y, and y = 16, what is the value of x?

A trader buys some goods for Tk. 150. If the overhead expenses are 12% of cost price, then at what price should it be sold to earn 10%?

A man purchased a cow for Tk. 3000 and sold it the same day for Tk. 3600, allowing the buyer a credit of 2 years. If the rate of interest be 10% per annum, then the man has a gain of :

A sells an article which cost him TK.400 to B at a profit of 20%. B then sells it to C, making a profit 10% on the price he paid to A. How much does C pay B?

Alam sold two vehicles for Tk 46000 each. If he gained 10% on the first and lost 10% on another, then what is his percentage profit or loss in this transaction?

If the selling price is doubled, the profit triples, Find the profit percent.

Out of 80 children, 35% can play only cricket, 45% can play only table tennis and remaining children can play both the games. In all, how many children can play cricket?

In a certain country. A person is born every 7 seconds and a person dies every 13 seconds. Therefore, the birth and death rates account for a population growth rate of one person every---

A shopkeeper gains 17% after allowing a discount of 10% on the marked price of an article. Find his profit percent if the article is sold at marked price allowing no discount.

6 pints of a 20 percent solution of methanol in water are mixed with 4 pints of a 10 percent methanol in water solution. The percentage methanol in the new solution is

When a commodity is sold for Tk. 49, there is a loss of 2%. What is the cost price of the commodity?