Katy was picking berries. she picked 135 berries in 15 minutes. if she continues picking at that rate, how many total berries will she pick in 25 minutes?

Okay, so how to explain the problem is that you have to make 135/15 into a unit rate, by doing 135 divided by 15 to equal 9/1, and then you multiply that by 25, and you got your answer, which is 225/25. The 9/1 means 9 berries per 1 minute. The other person got a different answer, but I think this is the correct way to do it, unless I am wrong.

X=y+4 is the answe