Question
Priya invests a sum of money at an annual compound interest
rate of 8%. After 4 years, the interest accumulated is Rs. 1120. If she increases her initial investment by Rs. 1000, what will be the total amount after 4 years at the same interest rate?Solution
ATQ;
Let 8% = 1120
Principal = 2800
Interest on 1000 = 8 × 10 = 160
Total = (1120 + 160) + 2800 + 1000 = 5080
Mr. Arun rows a boat with the stream at 10 km/hr and against the stream in 5 km/hr. In still water, his rate of rowing in km/h is:
If 'Head' appears consecutively in the first three tosses of a fair/unbiased coin, what is the probability of 'Head' appearing in the fourth toss also?
The difference between the length and breadth of a rectangle is 23 m. If its perimeter is 174 m, then its area is
The area of four walls of a room is 168 cm2. If the length and breadth of the room were equal and the height of the room is 7 cm, then what i...
If ratio of interior & exterior angle of a regular polygon is 4:5, then number of sides of the polygon is
The radius of a right circular cylinder is 4 times its height. If the height of the cylinder is 2.5 cm, then what is the volume of the cylinder? (in cub...
- The ratio of the length to breadth of a rectangular playground is 7:5. If the cost of fencing the playground at the rate of Rs. 4 per metre is Rs. 1920, th...
The length and breadth of a rectangle are increased by 30% and 40% respectively. The increase in the area of the resulting rectangle will be:
Find the perimeter of a sector which forms a central angle of 135° in a circle of radius 28 cm.
(Use π = 22/7)A well with 30 metre inner diameter is dug 6 m deep. Earth taken out of it, has been evenly spread all around it to a width of 15 m to form an embankmen...