Answer:
500 meters =20men =10days
To get the factor 500/(20*10)= 5/2 meters/day
For 50 men and 5days we don't know the meters
So we go by 50*(5/2)*5 =625meters
calculate length of the sides of the rectangle and multiply then do the same with the parallelogram
Total area is 51 square units
Answer:
and 
Step-by-step explanation:
Options

Required
Select the unit rates
Unit rate involve two items where the first item being measured can be any positive number, but the second item must be measured in units (i.e. 1)
For clarity:
If
represents unit rate, then 
Having said that:
Only
and
satisfy the condition of unit rates; others are not because they have a denominator other than 1
Answer:
54 ft = 18 yd 9. 11 L ≈ 11.6236 qt 10. 80 g = 0.08 kg
Step-by-step explanation: