Answer:
600 words
Explanation:
To solve this problem, we need to cross multiply. Lets input the values (100, 2.5, 5) as shown below:

Next we cross multiply. We multiply 2.5 and x, and we multiply 100 and 15.


Now, lets put the values above back into the equation:

Our next step is to divide 1,500 by 2.5 to get x by itself.


Sylvia can type 600 words in 15 minutes.