Question
The average of 17 numbers is 55. The average of the
first 6 numbers is 49.5 and that of the next 8 numbers is 60.5. The 16th number is 4 less than the 15th number and 6 less than the 17th number. What is the average of the 15th and 17th numbers?Solution
The correct answer is D
- The monthly incomes of P, Q and R are in the ratio 6:9:10, and their average income is Rs. 12,500. If P, Q and R spend 60%, 50% and 40% of their respective...
In an Aerobic class, the average age of all the members was 54.5 years, 11 members left the class and 7 new members joined. If the average age increase...
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.
...The average of two consecutive even numbers is 61. If the smaller number is increased by 18% and the larger number is decreased by 18%, then find the di...
- The average of two consecutive even numbers is 67. If the smaller number is increased by 35% and the larger number is decreased by 35%, then find the diffe...
The average daily income of a daily wage worker, in the month of July is Rs. 120. If his average income on 1st 12 days of the month is Rs. 80 and on las...
The average of the first and second numbers is 20, while the average of the second and third numbers is 25. If the sum of the first and third numbers is...
The average of 7 consecutive numbers is 20. The largest of these numbers is
The average of the two numbers is 15, and the square root of their product is 12. What is the difference between the two numbers?
Out of 4 numbers, the average of first 3 is 19 and last 3 is 20. If the last number is 21. Find the first number?
Relevant for Exams:
