The answer is probably 590,000 because isn't it subtraction
Am I suppose to be looking at a picture?
If there are 70 chairs but only 20 rows then that means he will have to set up 3.5 chairs per row, or Brook could set up 14 rows with 5 chairs in each row.
Srry if that didn't help but that's what i got from that.
Answer:
8
Explanation:
Too lazy to type it all