When you started your homework assignment, your friend already had 6 problems finished. You can
do 2 problems/minute and your friend can do
1 problem/minute. How many minutes will it take
you to catch up to your friend? When you catch up,
how many problems will you have finished?

6 minutes

Step-by-step explanation:

So for each minute, you would add 2 to your number while increasing your friends number by one.

You'd have 2 problems done when your friend would have 7, then 4 when they're at 8, 6 at 9, 8 at 10, 10 at 11

Then finally when it's been 6 minutes, you'd both have 12 minutes done.

d

step-by-step explanation: