Final answer:
Bob typed 40 words in 2/3 of a minute. By multiplying 40 by 3/2, we find that Bob's typing speed is 60 words per minute.
Step-by-step explanation:
During a typing test, Bob typed 40 words in 2/3 of a minute. To find Bob's typing speed, you can set up a ratio of words per minute. Since we want to know how many words Bob can type in one whole minute, we will use the following calculation:
Speed = Number of Words / Time (Minutes)
To calculate Bob's speed per minute, divide 40 words by 2/3 of a minute. To divide by a fraction, you multiply by its reciprocal. In this case, we multiply 40 by 3/2 (the reciprocal of 2/3):
40 words * (3/2) = 120/2 words = 60 words per minute.
Therefore, Bob's typing speed is 60 words per minute.