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
The present impasse between China and India, is a flare in of a long- standing eczema that is the result of incessant border scratching.
In the question given below, a sentence is divided into five parts. There is/are error(s) in one part or some parts of the sentence. Find out the part(s...
In the following question, a sentence is divided into four parts A, B, C, and D in which two of the parts have some grammatical or contextual errors i...
Read the sentence to find out whether there is an error in it. The error, if any, will be in one part of the sentence. The letter corresponding to that ...
In the question given below, a sentence is given, divided into parts. One of the parts may contain an error. Identify the part that contains the error,...
He told me that (1)/ he will be going to (2)/ the office tomorrow (3)/ to finish the project. (4)
With the loss, India have put themselves in (1)/ a precarious position and need to win (2)/ at least 4 out of their next 6 Test matches to ensure (3)...
When he looked back, (A)/the professor understood that (B)/he spent most of his life to teach (C)/at the middle school (D).
Choose the correct.
Glutathione is regarded as one of the most important detoxifications agent in the human brain.
Relevant for Exams:
