Answer:
10 1/2
Step-by-step explanation:
First we can convert 3 1/2 into a improper fraction to make it easier to multiply 3 1/2=7/2 and now we can multiply that fraction by 3 which is 21/2 and we can convert that back into a mixed fraction which is 10 1/2
I hope this helps and please don't hesitate to ask if there is anything still unclear!