Answer:
A. 710
B. 21000
C. ?
D. ?
E.?
F.?
G. 0
H. 110000
Step-by-step explanation:
I can't understand the questions on some of them
Answer:

Step-by-step explanation:
hope this helps
Answer: 2m/s
Step-by-step explanation:
The boat goes twice as fast down the river, which means it goes twice as slow up the river.
Because the river flows at 2m/s, I think the answer is 2m/s



<u>Answer:</u>

Hope you could understand.
If you have any query, feel free to ask.