For the following questions answer them individually
The length of a cuboid is twice its breadth and its height is half of its breadth. If the height of the cuboid is 2 cm, then what is the edge of a cube having the same volume as that of the cuboid?
The ratio of marketed price to selling price of an article is 12 : 7. What is the discount percentage?
A is the smallest three-digit number which when divided by 3, 4 and 5 leaves remainders 1, 2 and 3 respectively. What is the sum of the digits of A?
The diameter of a solid hemisphere is 35 cm. What is its total surface area?
(Take $$\pi = \frac{22}{7}$$)
A sum of money is invested at compound interest, which is compounded annually. The sum grows to โน1000 after three years, and โน1100 after four years. What is the rate of interest per annum?
There are 150 students in a school. If the ratio of the number of boys to girls is 4 : 1, then what is the mean proportion between the number of boys and girls in the school?
If $$A = 7 \times 3 \div (2 + 4) + 4 - 2, B = 3 \div 6 \times 4 + 2 - 2ย ofย 3$$ and $$C = 6 \div 2 + 4 \times 3 - 2$$. What is the value of $$(A + B - C)$$?
Pipe A can completely fill an empty tank in 11 hours. Pipe B can empty the same completely filled tank in 15 hours. If they are opened together, in how much time the empty tank will get filled?
The radius of a sphere is equal to the radius of the base as well as the height of a right circular cylinder. What is the ratio of surface area of sphere and curved surface area of cylinder respectively?
Side of a square is first increased by 10% and then decreased by 20%. What is the overall percentage change in area?