Question
B invests 20% of his monthly salary on Travelling and
20% of remaining on Food. Again, he invested 25% of the remaining (after travelling and food expenses) on Rent. If he invested Rs. 4,800 on Rent and Food, then find his monthly salary.Solution
Let monthly salary of B = 100x Amount invested on Travelling = (20/100) × 100x = 20x Remaining amount = 100x – 20x = 80x Amount invested on Food = (20/100) × 80x = 16x Remaining amount = 80x – 16x = 64x Amount invested on Rent = (25/100) × 64x = 16x ATQ, => (16x + 16x) = 4800 => x = 150 Therefore monthly salary of B = 100 × 150 = Rs. 15,000
The volume and height of a cylinder are 4224 cm3 and 21 cm. Find the radius of the cylinder.
On a circular racetrack that measures 4,000 meters in circumference, Kia and Sia begin a race at the same point and at the same time, traveling at speed...
A solid rectangular parallelepiped (cuboid) has dimensions 10 cm × 8 cm × 6 cm. It is melted and cast into small cubes each of side 2 cm. How many suc...
The length and breadth of a rectangular field are 45 m and 28 m respectively. What is its area?
Perimeter of a square field is 120 meters and the area of a rectangular field is 65% more than that of the square field. Find the area (in m2...
A rectangular park is 50 m long and 40 m wide. A path of uniform width is built inside the park along the boundary. The area of the path is 344 m². Fin...
The distance of the School and house of Suresh is 80 km. One day he was late by 1 hour than the normal time to leave for the college, so he increased hi...
The perimeter of a floor a room is 36m. What is the area of four walls of the room, if its height is 6m?
If a triangle with base 7 cm has the same area as a circle with radius 7 cm, then the corresponding altitude (in cm) of the triangle is:Â
If ∆ ABC~∆ FDE such that AB = 9 cm, AC = 11 cm, DF = 16 cm and DE = 12 cm, then the length of BC is:
Relevant for Exams:
