9-5=4 Therefore f=4
Hope this helps
Answer:

Step-by-step explanation:
Given


Required
How far did they row together
To do this, we simply add the distance they both covered.

This gives;

Take LCM


Simplify

<em>Hence, they both rowed 1/2 mile</em>
Answer:
I don't know how I would know but if he takes 30 minutes or less on each individual activity then he is correct, if he exceeds those limits, he is incorrect.
Step-by-step explanation:
Answer:
1 and 4, 2 and 3, 5 and 8, 6 and 7
Step-by-step explanation: