Answer:
7 hr * 12 days = 84 hours
10*84 = 840 man-hrs to build the wall
----
14 men * 8 hr = 112 man-hrs/day
840/112 = 7.5 days
Step-by-step explanation:
1. x= -5
2. x= 12
3. x= 49
4. r= or 2.792
5. s= 6
4 maybe I don't understand what or how to do this but W is similar to M. I don't really know.
c
Answer: 22
Step-by-step explanation: 44:2=22