Answer:
Step-by-step explanation:
20/12 = 1 2/3
30 ÷ 1 2/3
= $18
This means that every 1 inch in the drawing is 24 inches of the actual size.
Hope this helps!
2857*.24%=685.68
685.68*3=2057.04
2857-2057.04=799.96