For the following questions answer them individually
The average speed of a car is 1500 metres/minute. A sprinter covers in 30 seconds. What is the difference in the speed of car and the speed of sprinter?
A person earns a profit of 30 percent by selling an article for Rs. 325. How much percent should he increase his selling price to earn a profit of 40 percent?
The difference between the length and breadth of a rectangle is 40 metres. If its perimeter is 96 metres, then what will be the area of rectangle?
A man sold his bike for Rs. 18,600 at 55% profit. At what price would he have sold to incur a loss of 10%?
A trader allowed a discount of 30 percent on a trolley bag having list price of Rs. 1800 and earns a profit of 20 percent.
What is the cost price of the trolley bag?
In a 64 litres mixture the alcohol and water are in the ratio of 1 : 3 respectively. 32 litres mixture is taken off and replaced with 16 litres of water. What is the new ratio of alcohol and water respectively?
What is the value of $$\frac{2.5 \times 2.5 + 0.3 \times 0.3 + 5 \times 0.3}{1.6 \times 1.6 + 0.6 \times 0.6 - 1.2 \times 1.6}$$?
A sum becomes Rs. 12960 in 2 years at the rate of 4 percent per annum on simple interest. What is the sum?
The area of a rectangular floor is 600 square feet. If the length of the floor is 30 feet, then what is the breadth of the floor?
