Question
Three numbers are in the ratio 2:5:9. If the difference
between the sum of the smallest and the largest and the sum of the smallest and the second number is 28, find the greatest number.Solution
ATQ, Let the three numbers be 2x, 5x and 9x respectively. ATQ, (2x + 9x) – (2x + 5x) = 28 Or, 4x = 28 So, x = 7 Therefore, largest number = 9x = 9 × 7 = 63
Find how many cubes of side 10 cm each can be made by melting a cuboid with dimensions 90cm × 120cm × 150cm?
The cost of levelling a square field @ Rs.32 per sq. metre is Rs.2,88,800. Field is to be fenced and also 2 metres broad pathway is to be constr...
A solid cylinder has the total surface area 231 sq.cm. If its curved surface area is of the total surface area, then the volume of the cylinder is
The total surface area of a square-based right pyramid is 1536 m², of which 37.5% is the area of the base of the pyramid. What is the volume (in mᶟ) ...
Find the area of the triangle ABC. Where AC=17cm, AB=15cm, BC=8cm
A bus passes two bridges of length 500 m and 325 m in 90 seconds and 60 seconds respectively. The length (in m) of the bus is
A hemispherical bowl with an internal radius of 15 cm is full of liquid. This liquid will be filled in cylindrical bottles with a radius of 5 cm and a h...
The length, breadth and height of a room are in the ratio 2:3:4. If the breadth and height are halved while the length is doubled, then the total area o...
The ratio of length to breadth of a rectangle is 3:5. If the sum of the length and breadth of the rectangle is 32 cm, then find the area (cm2...
Relevant for Exams:
