Question
A can do a certain work in 12 days, B alone can do the
same work in 16 days. A and B undertook to complete it in Rs. 8000. With the help of C, they completed the work in 6 days. How much money (in Rs.) be paid to B?Solution
Efficiency of A = 4 Efficiency of B = 3 Efficiency of A + B + C = 8 Efficiency of C = 8 – 4 – 3 = 1 Efficiency ratio of A, B and C = 4 : 3 : 1 4 + 3 + 1 = 8 unit 8 unit = 8000 ⇒ 1 unit = 1000 ⇒ 3 unit = 3000 ∴ Money paid to B = 3000.
A right pyramid has an equilateral triangle as its base, with each side measuring 7 cm. The height of the pyramid is given as 32√3 cm. Find the volume...
The diameter of a circular field is equal to the side of a square field. If the total cost of fencing the circular field is Rs. 308 at the rate of R...
What is the difference between (in m2) the area of a circular field of radius 14 metres and area of a rectangular piece of land having its di...
The surface area of a right circular cylinder is 3,696 cm² and its radius is 14 cm. If the height of the cylinder is described as (k + 10), what is the...
The area of a rectangular field is 4374 m2 and its length to breath is in the ratio of 3:2. What is the perimeter of the field?
A field is 125m long and 15m wide. A tank 10m ×7.5m×6m was dug in it and the earth thus dug out was spread equally on the remaining field. The level o...
Axar purchased several cubical boxes at Rs. 12 each and placed them into a cuboidal box that perfectly fits these cubes. The curved surface area of the ...
What is the difference between (in m2) the area of a circular field of radius 21 metres and area of a rectangular piece of land having its di...
There is a rectangular paper, whose length and breadth are in the ratio 7:5, respectively and it has a perimeter of 48 metres. If a triangular piece wit...
Find the total surface area of a cuboid that is formed by combining two identical cubes, given that the total surface area of each cube is 150 cm².
Relevant for Exams:
