Let the total number of students in school B be ‘x’. Therefore, total number of students in school A = 1.4x Number of boys in school A = 0.90 × 1.4x = 1.26x Number of boys in school B = 0.7x Required % = [(1.26x – 0.7x)/0.7x] × 100 = 80%
The current age ratio of Akash to karan is 7:9, and the current age ratio of karan to Chetna is 3:5. If the average of their present ages is 62 years, d...
The ratio of age of A and B after 8 years is 4:5 respectively. The ratio of age of A and C 6 years ago is 3:4 respectively. If the present average age o...
Five years ago, the average age of a family of four members was 25 years. Six years hence, the ratio of their ages will be 9:7:5:3. Find the a...
In a classroom there are 13 boys and 11 girls. Average age of each boy and each girl is 23 years and 17 years respectively. The sum of ages of all the b...
The average of the present ages of A, B, C and D is (y-3) years. 12 years hence, the ratio between the ages of A and C is 9:8 respectively. Th...
The total age of A, B and C six years hence will be 89 years. Find the age of C five years hence, if the present age of A and B is 33 years and 24 years...
Fourteen years ago, the ratio of 'Armaan' and 'Billu's ages was 6:7. Currently, 'Chikku' is 36 years old, and six years ago, the ratio of 'Billu' to 'Ch...
The current ages of 'A' and 'B' are in the ratio 4:7. Currently, 'B' is 8 years younger than what 'C' was 6 years ago. If 'C' is 42 years old now, what ...
In a classroom there are 12 boys and 10 girls. Average age of each boy and each girl is 22 years and 18 years respectively. The sum of ages of all the b...
If the ratio of the ages of Karan and Saroj is 5 : 7. 8 years ago, the ratio of their ages was 2 : 3. Find the present age of Saroj?
