Question
The total strength of school A is 20% more than that of
school B. In school A and B, out of total number of students, 10% and 20% respectively are girls. The number of boys in school A is how much percent more/less than that in school B?Solution
Let the total number of students in school B be ‘x’. Therefore, total number of students in school A = 1.2x Number of boys in school A = 0.90 × 1.2x = 1.08x Number of boys in school B = 0.8x Required % = [(1.08x – 0.8x)/0.8x] × 100 = 35%
Find the surface area of the smallest cube that can perfectly fit a sphere of volume 972π cm3 inside it.
The circumference of a circle is equal to the perimeter of a rectangle whose length and breadth are in ratio 13:10, respectively. If the area of the rec...
Perimeter of a square shaped plot is 80 metres and the area of a rectangular plot is 38% more than that of the square shaped plot. Find the area (in m
If the curved surface area and the radius of a cylinder are 990 cm2 and 21 cm, respectively, then find the volume (in cm3) of the ...
The volume of a cuboid whose length, breadth, and height are in the ratio 5:3:2, respectively, is 3,000 cm³. Find the lateral surface area of the cuboi...
The length of a 744 metre long wire is 12 times the perimeter of a rectangular French garden. Find the area of the rectangular garden given that its len...
Two paths of width 6 metres are to be made in the centre of rectangular field such that they are perpendicular to each other. Find the area (in m2<...
A street of width 25 metres surrounds from outside a rectangular garden whose measurement is 190 m × 220 m. The area of the path (in square metres...
- What is the surface area of a sphere if its volume is 4,851 cm³?
Relevant for Exams:
