Question
The average of 30 numbers is 55. The average of the
first 15 numbers is 50 and the average of the last 12 numbers is 55. What is the average of 68, 74 and the remaining 3 numbers?Solution
Sum of all 30 terms = 30 x 55= 1650 Sum of first 15 terms = 15× 50 = 750 Sum of last 12 terms = 12 x 55 = 660 After removing the first 15 and last 12 terms, there will be 3 terms remaining.  Sum of remaining 3 terms = 1650 (750 +660) = 240 According to the question, 68 and 74 are added to the sum of 3 terms. Thus, the number of total terms becomes 5. Average of 5 terms = (240 +68 + 74)/5 382/5= 76.4  76.4 is the average of 68, 74 and the remaining 3 numbers.
PACS deals directly with the rural (agricultural) borrowers, give those loans and collect repayments of loans. What does PAC stand for?
In October 2023. Indian Institute of Science Education and Research Bhopal identified ciTRAN, Which of the following statement is/are CORRECT about this...
What is the primary focus of the PM Vishwakarma Yojana (PMVY)? Â
Which one of the following Articles of the Constitution of India prohibits employment of children in factory or mine or any other hazardous employment?
The OECD (The Organisation for Economic Co-operation and Development) headquarters are situated in:
Match List-1 with List-2 and select the correct answer using the codes given below the lists.
Which one of the following is an example of non-celluloid fibre ?
Which king of Magadha was called ‘the destroyer of all Kshatriyas’?
The sum of length, breadth and height of cuboid is 20cm.If the length of the diagonal is 12 cm, then find the total surface area of the cuboid( in cm
Who appoints the Chief Justice of India?
Relevant for Exams:
