Question

Lin can type 192 words in 6 minutes. Hoi can type 112 words in 4 minutes. Which statement is true? Hoi can type 4 more words per minute than Lin. Lin can type 4 more words per minute than Hoi. Lin can type 8 more words per minute than Hoi. Hoi can type 8 more words per minute than Lin.

Answer 1

Lin can type 4 more words per minute than Hoi.

Answer 2

B. Lin can type 4 more words per minute than Hoi.

Explanation:

We have been given that Lin can type 192 words in 6 minutes. Hoi can type 112 words in 4 minutes.

First of all, we will find per minute typing speed of Lin and Hoi as:

`\text{Typing speed of Lin}=\frac{192\text{ words}}{\text{6 minutes}}`

`\text{Typing speed of Lin}=32\frac{\text{ words}}{\text{ minutes}}`

Therefore, Lin's typing speed is 32 words per minute.

`\text{Typing speed of Hoi}=\frac{112\text{ words}}{\text{4 minutes}}`

`\text{Typing speed of Hoi}=28\frac{\text{ words}}{\text{ minutes}}`

Therefore, Hoi's typing speed is 28 words per minute.

We can see that Lin's typing speed is 4 more (32-28) words per minute more than Hoi, therefore, option B is the correct choice.