Very good job! They are all correct and it shows how you got the answer! ^_^ 100%
M 1: 64
M 2: 49
M 3: 87
M 4: 44
For a;

For b;

If my calculations are incorrect, then sorry ;/
- <u><em>❤ 7272033Alt ❤</em></u>
All you have to do is draw a net in the box.
can you help me with something since i helped you?
<span>Find the round trip distance:
4.95 km/hr * 48 min * 1 hr/60 min = 3.96 km
1.98 km each way
d = r*t
t = d/r = 1.98/4.5
t = 0.44 hrs upstream
t = 26.4 minutes upstream</span>