How many models of 100 do you need to model 3600 Please answer this full question for me and fill in the blanks to the entire question thank you so much

Answer:
a=36, b=3, c=36, d=66
Step-by-step explanation:
a=3600/100=36
b=30*100/1000=3
c=30*100+(36*100)=66 hundreds