Question
Three positive numbers are in the ratio 2:3:4. The sum
of their squares is 2349. The average of the largest and the second largest number is:Solution
Let the three numbers be 2x, 3x and 4x, respectively.ATQ;(2x) 2 + (3x) 2 + (4x) 2 = 2349Or, 4x2 + 9x2 + 16x2 = 2349Or, 29x2 = 2349Or, x2 = 81So, x = 9 (Since, numbers are positive therefore we can discard the negative root)So, required average = {(3 X 9) + (4 X 9) } ÷ 2 = (63/2) = 31.5
Where was the Banded Royal butterfly discovered for the first time in India?
The Invest Rajasthan Summit,2022 which was supposed to be held on 24th and 25th January, 2022 in Jaipur was postponed due to emerging cases of Covid 19,...
An Registrar and Transfer Agents ( RTA) would be categorized as QRTA if at any time during a financial year, the combined number of physical and demat f...
The First Asian Buddhist Summit (ABS) held in New Delhi on November 5-6, 2024, is organized by which ministry in India?
The Housing and Urban Development Corporation (HUDCO) was fined by RBI for not doing which of the following?
On which date World Thrift Day is observed annually?
Which country won the Uber Cup 2021?
Which amendment act established the Panchayati Raj System in India?
___________ is mutual funds writing off the principal amount and the interest in case of a default?
What factor contributed significantly to India’s credit rating upgrade to ‘BBB’ by Morningstar DBRS?
Relevant for Exams:
