A person can type 15 words in 1/4 of a minute. What is his average typing speed in words per minute?
1/4 minute = 15 seconds
The person types one word a second.
To find the average typing speed in words per minute, we need to determine the number of words the person can type per minute.
Given that the person can type 15 words in 1/4 of a minute, we can calculate their typing speed as follows:
First, we need to determine how many sets of 1/4 minutes there are in 1 minute. Since 1/4 can be simplified to 0.25, we can divide 1 by 0.25:
1 / 0.25 = 4
This means that there are 4 sets of 1/4 minutes in 1 minute.
Next, we can find the number of words the person can type in 1 minute by multiplying the number of words they can type in 1/4 of a minute by the number of sets (4) in 1 minute:
15 words * 4 = 60 words
Therefore, the person's average typing speed is 60 words per minute.