6/10 and 12/20 are both equivalent to 3/5
We know that in one minute the toddler is 2(270)=540 feet and mother is 580 so less than 1 minute
The hill means it was already 23 feet above ground and he went and back up so the answer is 23 positive
The answer is A! If 1/3 is gone, there’s 2/3 left. To find how much 2/3 is, you would multiply 80 by 2/3