Question
Anita has some money left after spending 20%, 10% and
30% of monthly salary on rent, electricity and shopping respectively. The remaining money with Anita increases by 1/4 when a friend gives him Rs. 4600. What is the monthly salary of Anita ?Solution
After spending 20%, 10% and 30% of salary on rent, electricity and shopping. The amount left with Anita is = 100 – (20 + 10 + 30) = 40% of salary as savings. Money increases by (1/4), Increase in remaining money = 1/4 × 40% (salary) = 10% => 10% (salary) = Rs. 4600 Monthly Salary = (100/10) × 4600 = Rs. 46000
The perimeter of a square field is 14 cm more than the perimeter of a rectangle. The length of the rectangle is 49 cm which is 350% of its width. If a s...
A race track is in the shape of a rectangle with length of 30 metres and area of 4500 m2. A car takes 20 seconds to make one lap around the p...
A rectangular plot has an area of 490 m². If the length of the rectangular plot is 24.5 m. Find the perimeter of the rectangular plot.
The perimeter of a rectangular field is 44 metres and its area is 61.5 m2 . What is the length of the diagonal of this field?
A room measures 15 meters in length and 9 meters in breadth, with a maximum air volume of 540 cubic meters. Calculate the cost of painting the two large...
A circular wire of diameter 84 cm is folded in the shape of a rectangle whose sides are in the ratio 8:3. Find the area enclosed by the rectangle.
When the breadth of a rectangle is reduced by 4cm (keeping the length constant), its area reduces by 72 cm2 and when the length is reduced by...
- Calculate the lateral surface area of a right circular cone whose diameter is 14 cm and vertical height is 10 cm.
The weight of a cubic metre metal is 1215 kg. It is melted and cast into a square rod of 9m length. A solid cube of maximum size is taken out from one e...
The ratio of the radii of the bases of a cylinder and a cone is 7:8, while the ratio of their heights is 4:5. What is the ratio o...