Question
A bag contains 20 rupees note, 50 rupees note and 100
rupees note in the ratio 5:7:2. If the total amount in the bag is Rs 1,300, find the number of 50 rupees note.Solution
Ratio of values of the notes = 5 x 20 : 7 x 50 : 2 x 100 = 2:7:4 Value of 20 rupees note = 1300 x 2/13 = Rs. 200 Value of 50 rupees note = 1300 x 7/13 = Rs. 700 Value of 100 rupees note = 1300 x 4/13 = Rs. 400 Number of 20 rupees note = 200/20 = 10 Number of 50 rupees note = 700/50 = 14 Number of 100 rupees note = 400/100 = 4
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: