The number of students in sections A and B are 60 and 70 respectively. The average score in mathematics of students in A is 70 and that of students in A and B together is 63. What is the average score of students of section B in mathematics?
The correct answer is A
The ratio of the present age of A to that of B is 7:9. Six years ago the ratio of 1/3 of A’s age at that time and 1/3 of B’s age at that time was 1:...
The average age of A, B and C is 25 years, while the average age of B, A and D is 23 years. If the ratio of the age of C and D is 5:3, respectively, the...
‘A’ is 7 years younger than ‘B’ and 6 years elder than ‘C’. If the present age of ‘B’ and ‘D’ is 35 years and 24 years, respectively...
6 years ago, the ratio of the ages of A and B was 2:3 and after 5 years it will become 5:7. Find their present ages.
The ratio of the present ages of ‘A’ and ‘B’ is 7:6, respectively. Two years hence from now, the age of ‘B’ will be 20 years. If the average...
B is 4 years older than A and A is 6 years older than C. If the sum of the age of A and C is 22 years, then find the sum of the ages of all three.
The ratio of the present ages of father and his son is 9:4. The product of their ages 3 years ago was 24 times of his son’s age that year. What was so...
The ratio of the present ages of father and his son is 5:2. The product of their ages 4 years ago was 31 times of his son’s age that year. What wa...
18 years ago the average age of a family of four members was 45 years. Two children were born in that span of 18 years. The present average age of the f...
The current average age of three friends, Aravi, Bipasa, and Chinu, is 24 years. The ratio of Chinu's and Diksha's present ages is 4:5, and Bipasa's cur...
