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%
The batting average for 27 innings of a cricket player is 47 runs. His highest score in an innings exceeds his lowest score by 157 runs. If these two i...
The average of all prime numbers between 32 and 69 is.
The average weight of A, B and C is 45 kg. If the average weight of A and B be 40 kg andthat of B and C be 43 kg, then the weight of B is :
Sum of ages of 65 students is 1300 years. The average age of 25 of them is 16 years and the average age of another 20 of them is 14 years. Find the ave...
When the average age of a husband and wife and their son was 44 years, the son got married and a child was born just one year after their marriage. When...
The average age of the husband, wife, and their child 3 years ago was 24 years and that of the Wife and the child 4 years ago was 19 years. The present ...
- The number of students in class 'A' is 100, and the ratio of the number of girls to boys is 2:3. If the average number of boys in classes A and B is 105, a...
Average of 8 numbers is 25. If average of first four and last two numbers is 15 and 40, respectively then find the fifth number given that ratio of fift...
The average salary of a group of 12 employees is Rs. 60,000. When one employee departs, the average salary of the remaining 11 employees drops by Rs. 2,...
- The average age of a team of 20 men is 36 years. If the total age of a group of 16 women is 20% less than the total age of the team of men, then what is th...
Relevant for Exams:
