It should be option A! I hope this helps you!
Answer:
4
Step-by-step explanation:
Whatever you multiply or divide to the numerator, you do to he denominator.
Here, 12 was divided by 4 to obtain 3 in the other fraction. So, the missing number has to be 16 divided by 4, which gives 4
Answer:

Step-by-step explanation:

I'm not certain how exactly this question is supposed to be answered.
If it wants a ratio, Paul and Jennifer's speeds would be in a ratio of 3:4.
It also could be Paul types 20 words per minute slower than Jennifer.
It could be Paul types 33% slower than Jennifer.
Another answer could be Paul's typing speed is 3/4ths of Jennifer's typing speed.
Feel free to ask any further questions.
You have to muliply it all togeather to get the exact answer. 4 times 10 equals 40 40 times 3 equals 120 then 120 times 6 equals 720 and thats the right answer