@parikasa156
Started 3 weeks ago in
Im unable to understand this question
Ques - In a class, 20% of the students were absent for an exam. 10% failed by 10 marks and 20% just passed because of grace marks of 5. Find the average score of the class if the remaining students scored an average of 50 marks and the pass marks are 30 (counting the final scores of the candidates).Here while taking the average score of the class, the base should be 100 or 80( 20 absent students are removed)and will the equation be =ย 20*0 + 10*20 +20*30 + 50*50 / 100ย ORย 10*20 +20*30 + 50*50 / 80.ย as both gives me a different answer.
@parikasa156
Started 3 weeks ago in
I'm unable to understand this question
Ques - In a class, 20% of the students were absent for an exam. 10% failed by 10 marks and 20% just passed because of grace marks of 5. Find the average score of the class if the remaining students scored an average of 50 marks and the pass marks are 30 .Here while taking the average score of the class, the base should be 100 or 80and will the equation be =ย 20*0 + 10*20 +20*30 + 50*50 / 100ย ORย 10*20 +20*30 + 50*50 / 80.ย as both gives me a different answer.
@parikasa156
Started 3 weeks ago in
I want to know if this approach is correct
The average number of printing error per page in a book of 512 pages is 4. If the total number of printing error in the first 302)pages is 1,208, the average number of printing errors per page in the remaining pages is:Can we directly input 4 here since in the first line it is mentioned error is 4 per page?
@parikasa156
Started 3 weeks ago in
Im not able to understand this approach
There are 50 boys in a class. Their average weight is 45 kg. When one boy leaves the class, the average reduces by 100 g. Find the weight of the boy who left the class.By using this formula :Change in quantities * old average (+-) change in average * new quantityย Im getting a negative 40.1 Kg value which is incorrect.Am I using the formula wrong or where am i going wrong because this is a shortcut formula and it is applying well in the cases where the weight is added or the quantities are increasing , but when the quantities are decreasing, I unable to apply the same formula.
@parikasa156
Started 3 weeks ago in
Im confused here
WhatsApp Image 2025-05-17 at 19.31.39.jpeg 173.09 KBIn this passage the answer should be option bย right?
@parikasa156
Started 3 weeks ago in
Im confused here
WhatsApp Image 2025-05-17 at 20.06.52.jpeg 175.55 KBWill the answer here be C rather than A. Because Fiend means anything cruel and the passage is just not talking about the cruelty but other aspects too.ย So i think it will be C here but I just wanted to confirm.
