Question
The average of 18 numbers is 75.
The average of the first nine numbers and the last six numbers is 62.5 and 82.5, respectively. The 12th number is 34.3 more than 1.8 times the 10th number, which itself is 119.5 less than the 11th number. What is the value of the 11th number?Solution
ATQ,
Let 10th number is ‘x’ So, 12th number = 1.8 × x + 34.3 And, 11th number = x + 119.5 So, x + 1.8x + 34.3 + x + 119.5 = 18 × 75 – 9 × 62.5 – 6 × 82.5 = 292.5 Or, 3.8x = 138.7 Or, x = 36.5 So, 11th number = 36.5 + 119.5 = 156
The upcoming project “Statue of Oneness” will be launched in the state?
Where is Sipat Thermal Power Plant located?
How many floors does the Qutub Minar have?
Which of the following key themes is being promoted as part of Poshan Maah 2024 to ensure healthy growth in children?
In which location did Narayana Guru establish a Sanskrit school?
Under the 'One Nation, One Election' proposal, which elections would be held concurrently?
RBI was a privately held bank before 1949
The Government is planning to spend how much crores of Rs under the PMKSY(Pradhan Mantri Krishi Sinchai Yojana) ?
Which is the main language of Nagaland?
How many districts of India is recognised as Aspirational District?
