Answer:
10 km/hr
Step-by-step explanation:
5 hrs = 40 more with 2 km/hr current
2 hrs= less 40 no current
40-2x5=30
30 without current for three hours
30/3=10 km/hr no current
***
CHECK
10x2=20
10x5=50+2x5=60
***
Hope this helps, and please mark me brainliest! thanks! >//-//<
Answer:

Step-by-step explanation:
Solve for x by simplifying both sides of the equation, then isolating the variable.
Answer:
b, c, d and f since they have a sign of greater> or less to> or greater and less to