Set up a proportion, cross multiply, and solve.

3(7.2) = 4(x)
21.6 = 4x
5.4 = x
The common denominator would have to be 42
Answer:
4 workers
Step-by-step explanation:
20 ft x 30 ft = 600 sq ft per worker per hour x 8 hours = 4800 sq ft per worker
18,400 sq ft divided by 4800 = 3.83 so 4 workers
Answer:
112
Step-by-step explanation:
hope this helps
B and c would be answered