adkikani wrote:
pushpitkc niks18 Hatakekakashiamanvermagmat VeritasPrepKarishmaQuote:
A stenographer is tasked with typing a certain letter. How many words long is the letter?
How many TOTAL words in the letter she writes?
Quote:
(1) It will take two minutes less time to type the letter at an average speed of 80 words per minute than at an average speed of 60 words per minute.
How to interpret this as : Avg = Sum of words / No of words and take it forward
Quote:
(2) It will take 6 minutes to type the first half of the letter at an average speed of 40 words per minute.
Why do we assume that RATE will NOT CHANGE in the second half?
Hi
adkikaniQuote:
(1) It will take two minutes less time to type the letter at an average speed of 80 words per minute than at an average speed of 60 words per minute.
How to interpret this as : Avg = Sum of words / No of words and take it forward
Note here we are given average speed of words typed i.e. total words typed/total time taken to type. Now you are given two scenarios and two average speed. You can frame an equation using the relationship and solve to get total number of words.
Quote:
(2) It will take 6 minutes to type the first half of the letter at an average speed of 40 words per minute.
Why do we assume that RATE will NOT CHANGE in the second half?
Here you are given Average Speed which will again imply that \(\frac{total words typed}{total time taken}\). So there will not be multiple average speeds for the same document. Average speed implies that it has taken care of all the intermittent speeds.