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The correct answer is D
In a classroom there are 16 boys and 12 girls. Average age of each boy and each girl is 21 years and 17 years respectively. The sum of ages of all the b...
The ratio of difference between the present age of A and B to the present age of B and C is 6:1. 6 years hence, the ratio between the age of A and C is ...
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 ages of A, B and C is 2 : 4 : 5 and sum of their ages is 77. Find the ratio of A's age to B's age ten years hence.
The average age of a group of 40 people is 22 years. If the age of 5 people is excluded, the average age decreases by 1 year. What is the average age of...
A person’s present age is 4/5th of the age of his brother. After 10 years, he will be 9/10th of the age of his brother. How old is the brother at ...
The ratio of age of Rahul 7 years ago to the age of Neha 7 years hence is 3:4. If the average of their present ages is 35 years, what is the difference ...
Which of the following is a video format?