Question
The table below shows the number of students in
different streams of a college: Find the ratio of Arts students to non-Arts students.Solution
ATQ, Arts students = 400 Non-Arts = 1,200 − 400 = 800 Ratio (Arts : Non-Arts) = 400 : 800 = 1 : 2.
The average age of (x + 7) trainees is 17 years. When a 39-year-old trainer joins, the average becomes 18 years. Find x% of 500.
The average marks of 'n' boys is (n + 6) and that of 30 girls is (2n - 10). If the average marks of all students together is 52, find the number of boys.
In a team, there are 15 men and 25 women. The average weight of each man is 70 kg while that of each woman is 60 kg. What is the average weight of a per...
The average monthly fee for 30 students in a workshop is Rs. 10,000. After an increase, the new monthly average fee for each student is Rs. (10000 + X)....
Three numbers a, b and c are such that a = 120, (a + b) = 420 and (c – b) = 60. Find their average.
There are three distinct numbers ‘m’, ‘n’ and ‘o’. If, m = 210, (m + n) = 510 and (o – n) = 60, then find the average of m, n and o.
...Average run scored by a batsman in first ‘x’ matches is 70. In next 12 matches he scored runs with an average of 90 so that his overa...
Find the average of prime numbers between 20 and 40.
Virat Kohli's strike rate after facing 'b' balls is 120. In the subsequent 15 balls, he scores an additional 39 runs, leading to ...
The average of 13 numbers is 10.The average of first 6 numbers is 8 and that of the last 6 numbers is 10. What will be the 13th number?
