The area of a triangle is A ( area) = B (base) × H (height) ÷ 2
Recall your d = rt, distance = rate * time.
b = speed rate of the boat.
c = speed rate of the current.
keeping in mind that, as the boat goes Upstream, against the current, it's speed is not "b", but is really " b - c ", because the current is subtracting speed from it.
likewise, when the boat is going Downstream, because is going with the current, is really going faster at " b + c ".

what is the speed of the boat? well, 61 + c = b.
Answer:
C
Step-by-step explanation:
Hope I was able to help!! :)
Answer:can’t read it
Step-by-step explanation:
Can you take a pic closer to the screen?