Question
The average weight of 20 students in a class is 50 kg.
If the weight of the teacher is included, the average weight increases by 1 kg. If the weight of the teacher is excluded and replaced with another student weighing 55 kg, what will be the new average weight of the group?Solution
Total weight of 20 students = 20 × 50 = 1,000 kg Including the teacher, new total weight = 21 × 51 = 1,071 kg Teacher’s weight = 1,071 - 1,000 = 71 kg Replacing the teacher with a 55 kg student: New total weight = 1,000 + 55 = 1,055 kg New average = 1,055 ÷ 21 = 50.24 kg Correct Option: a)Â
Whether the contents of documents or electronic records, can be proved by oral evidence?
As per Negotiable Instruments Act 1881, a 'Bill of Exchange' is:
As per the Occupational Safety, Health and Working Conditions Code, 2020 every person who designs, manufactures, imports or supplies any article foruse ...
Art 311 acts as a safeguard to civil servants except:
Which type of tort involves false statements that harm a person's reputation?
Consent is said to be free when it is not caused by________________
Special provisions for compensation have been provided under Motor Vehicles Act for hit and run cases in respect of-
When a new plaintiff is added to the suit after an interest has devolved on him in another suit, the suit shall be deemed to be instituted on behalf of...
The Chairperson of the IRDA shall not hold office after he has attained the age of__________________
Which word is related to "hot" in the same way as "cold" is related to "ice"?
Relevant for Exams:
