Answer:
250
Step-by-step explanation:
Number of labourers * Number of days worked = Total number of working days
Total number of working days to construct a 4km long road: 
Total mumber of working days to construct a 8km long road: 
Labourers: 20000 ÷ 80 = 250.
250 labourers are required.
Answer:
A) x=2
Step-by-step explanation:
Answer:
$126
Step-by-step explanation:
$252/$18=$14 dollars per hour.
now take 14*9 and you get $126.
Answer:
The answer is D.) x-3
Step-by-step explanation:
Step-by-step explanation:
-(-3x-5)=7x
3x+5=7x
4x=5
x=5/4