Required Ratio =15% of 2/5 × 25crore / 8% of × 3/8 × 25crore = 30/500 : 800/24 = 5 × 8 :5 × 4 = 2 : 1
The average weight of 12 children rises by 2.15 kg after one of the children, who weighs 56 kg, is replaced by a new child. What is the weight of the ne...
A bowler gives 16.2 runs per wicket. He gives 32 runs and takes 8 wickets in a last match after which his average becomes 15.4 runs per wicket. How many...
How many identical spherical marbles having a diameter of 4 cm can be made by melting a hemisphere of radius 28 cm? (Use π = 22/...
The average of 18 numbers is 40, and the average of the first 9 numbers is 45. Find the average of the remaining 9 numbers.
The mean of 50 observations was calculated as 75. It was later found that one of the observations was misread as 173 instead of 113. The correct mean is...
The average score obtained by 22 students in a class test is 68 marks. The top place was shared by 3 people who got the same score. If the lowest score ...
The average weight of 16 people in a group is 75 kg. If the heaviest person who weighs 95 kg is replaced by a new person, and the average weight of the ...
The average age of a group of 10 friends is 27 years. If one friend leaves the group, the average becomes 25years. Find the age of the friend who left t...
The average salary of 28 employees is recorded as ₹ 16,584. If the salary of an employee with value ₹14,526 was entered Wrongly as ₹ 41,238, then ...
The average of two numbers is 25, and the square root of their product is 20. What is the difference between the two numbers?
