Question
The average marks of all the students decreased by 2
when it was found that marks of one of the student were wrongly interpreted as 80 instead of 40. Find the total number of students.Solution
Let number of students be 'N' and sum of marks of all the students be 'S'. ATQ: We have, [(S - 80 + 40) /N] = (S/N) - 2 Or, (S/N) - [(S - 40) /N] = 2 Or, (40/N) = 2 So, 'N' = (40/2) = 20 Therefore, total number of students are 20.
Recently a "JALDOOT app and JALDOOT App e-brochure" was introduced by which of the following ministeries to monitor the water level of the town?
Which organization recently received approval from the Reserve Bank of India (RBI) to commence asset reconstruction operations in the fiscal year 2024-2...
The launch of ‘Bank Sakhi’ in the state of Odisha by which public sector bank?
Which one is the only river in Uttar Pradesh that do not emerge from Himalayas
Who was the first woman to travel into space from the state Haryana?
Which river is the longest in Asia?
Indira Sager Dam in Madhya Pradesh is built on which of the following rivers?
The new Attorney General of India will be________?
In Haryana state, what does SYL stands for?
Central Government has allocated Rs 404 crore to ______ for medical infrastructure advancement under the Pradhan Mantri Ayushman Bharat Health Infrastru...
Relevant for Exams:
