Question
There are two sections A and B of a class, consisting of
38 and 42 students, respectively. If the average weight of the students of section A is 55 kg and that of section B is 32 kg, find the average weight of all the students in the class.Solution
The correct answer is B
Five years after a couple's marriage, a daughter was born. The average age of the family 3 years after the daughter was born is 24 years. Further 3 year...
A is younger than B by 4 years. If the ratio of A and B ages is 9:10 respectively, then find the age of A.
In a classroom there are 14 boys and 11 girls. Average age of each boy and each girl is 21 years and 15 years respectively. The sum of ages of all the b...
The ages of A, B and C together are 42 years. B is twice as old as A and C is 2 years older than A. What is the difference between ages of B and C?
Present ages of P and Q are in the ratio 2:3 respectively. If Q’s age, 8 years hence from now will be 2 times of P’s age, 6 years ago from now, then...
The ratio of the present ages of P and Q is 8:7 respectively. If the age of P 10 years hence from now will be 100% more than the age of Q 4 years ago fr...
When 6 years ago age of Vikas was divided by 18, the present age of his granddaughter Geeta is obtained. If Geeta is 2 years younger than her sister Sit...
When 15 years ago age of Dev was divided by 20, the present age of his granddaughter Swati is obtained. If Swati is 6 years younger than her sister Neha...
Present ages of P and Q are in the ratio 3:5 respectively. If Q’s age, 16 years hence from now will be 6 times of P’s age, 6 years ago from now, the...
Three years ago, the ratio between the ages of 'A' and 'B' was 4:5, and eight years from now, the ratio will be 6:7. If 'C' is 12 years older than 'A', ...
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