Question
The total strength of school A is 60% 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 = 1.6x Number of boys in school A = 0.90 × 1.6x = 1.44x Number of boys in school B = 0.8x Required % = [(1.44x – 0.8x)/0.8x] × 100 = 80%
If the Simple Interest and Compound Interest of a sum of money for two years are Rs. 1800 and Rs. 1935 respectively. Then find out the sum?
Total surface area of a Cuboid is 592 cm ² and the Sum of its Length, breadth and height is 30cm, then find out the sum of the squares of its lengt...
Two boys are on opposite sides of a tower of 100 m height. If they measure the elevation of the top of the tower as 30° and 45° respectively the...
The diameter of the base of a cylindrical drum is 21 dm and the height is 12 dm. It is full of petrol. How many tins each of size 15 cm × 11 cm &t...
A girl found the answer for the question “subtract the sum 1/2 and 1/8 from unity and express the answer in decimals” as 1.5. The percentage...
The efficiency of A,B,C,D are in the ratio of 6:5:4:3. If A and C can do a work together in 6 days. Then How many days B and D will take to complete the...
In a Mixture , the ratio of Milk and Water is 7 : 5. If 12 litre mixture is drawn off and replaced by 8 litre water then the ratio of Milk and Water bec...
When N is divided by 5 the remainder is 2. What is the remainder, when n³ is divided by 5?
If x+ 1/x = 3, then find the value of 2x/(3x²-5x+3)
A maximum size cone is cut from a wooden cube of length 14 cm. find the volume of cone?
