The price of a shirt is increased by 20% . How many shirts can be purchased for the amount of money that was used to buy 300 shirts before?
If the ratio of boys and girls in a school is 5: 3 . which of the following could not be the number of students in the school?
A Fast food shop sells pizza in 3 sizes: large, super, and jumbo. One day the shop sold 240 pizzas, and the ratio of sales of large to super to jumbo was 8 : 17 : 15. How many jumbo pizzas were sold that day?
On Saturday , 20 of the students in a class took a test and their average score was 80. On Tuesday, the other 5 students took the test, and their average score was 90 . what was the average for the entire class?
A container full of water weighs 20 kg . If one -fourth of the container is full of water. it weighs 8 kg . What is the weight of the empty container?
A ferry can carry 24 buses or 36 cars at a time. If there are 9 cars on the ferry. how many buses can be loaded into it?
Which of the following is the next number in the series : 3 , 6 , 9 , 18 , 27 , 54 , 81,.....?
A 180 liter mixture of milk and water contains 20% water. How much milk, in liters, must be added to the mixture so that the new mixture will contain water and milk in the ratio of 1 : 7?
Jenny's average on 4 exams is 80. Assuming she cannot earn more than 100 on any exam. What is the least she can earn on her 5th exam and still have a chance for an average of 84 after seven exams?
Samad was planning on depositing a certain amount of money each month into a bank. He then decided not to make any contributions during May and June. To make the same annual contribution that he had originally planned, by what percent should he increase his monthly deposits?
A salesman usaally makes 45% profit on every TV he sells. During a sale, he reduced his margin of profit to 40% and his sales increased by 10% . what is the ratio of his new profit to his usual profit?
Since 1999 , Roby has gained 2 kilograms of weight every year, In 2009 he was 25% heavier than in 1999 . How much did Roby weigh in 2005?
The length of a rectangle is 6 cm more than the side of a square, and the width of the rectangle is 6 cm less than the side of the square. If the area of the square is 86 cm2. what is the area of the rectangle?
If x is negative , all BUT which of the following must also be negative?
A drug store usually sells a certain medicine at 40% profit . During a sale, the medicine was sold for 10% less than the usual price. What percent profit the store made on eachof this medicine during the sale?
If (x2 -y2) =48 and (x -y) =4 , what is the average of x and y?
The average score of students on a certain exam was 85.50. On the same exam Raju scored 90. What was Raju's percent deviation from the average score?
A barge, when empty, travels twice as fast as when it is full. If it travels 20 miles north with a cargo , spends 30 minutes for unloading, and returns to its original port empty . completing the entire trip in 8 hours, what is the speed of the barge when it is empty?
A solution that contains 20% sugar by weight is made sweeter by doubling the amount of sugar.The percent of sugar, by weight, in the new solution is --