Answer: 
<u>Do Keep Change Flip (KCF)</u>
Keep: 
Change: ÷ into ×
Flip:
into 
<u>Multiply</u>

<u>Divide</u>

Its 25 for the second one
Answer:723.202
Step-by-step explanation:
Step-by-step explanation:
To find this, we need to divide
by

Well, 1/4 of 36 is 9, so 15000*9= 13500 cartridges in all