So it was 75 to 25 people. that would be decrease by 66.66666666 (forever) percent
Week 24,assuming that both machines are cleaned at week 0, because multiples of 12 are 12, 24,36. And multiples of 8 are 8, 16, 24. 24 is also the LCM.
Division is repeated subtraction, just like multiplication is repeated addition. If you divide 50 by 10, you get 5. This is also the question: How many times do you have to subtract 10 from 50 to get 0?
Imma go with the second bubble shown
Answer:
4
_
3.14159265358979323846264338327952884197169393751