I know 8-10.
8.>
9.>
10.>
Cheack the expononets may be it wrong harder to get
Answer:

Step-by-step explanation:
we know that
1 Kilometer (km) is equal to 100 dekameters (dam)

To convert km to dam , multiply by 100
we have

Convert to dam

Answer:
65 miles
Step-by-step explanation:
There are two simultaneous equations
. Remeber that v=d/t, 1hour = 60 minutes.
1. 40 = (d+15)/(t+0.5)
2. 50 = d/t
solving: d= 25 miles and t=0.5 hours.
The distance traveled is:
D=d+d+15
D=65 miles
Answer:
6
Step-by-step explanation:
If there was one man, he would have taken 15×4= 60 hours
To complete the job in 10 hours, 60÷10 = 6 men will be needed