Answer: B. 36 feet.
Number of strings = 8
Step-by-step explanation:
From , the given line plot, the number of strings used by Mario = Number of cross on the line plot
i.e. Number of strings used by Mario = 8
Now by the given line plot , the sum of all the observations will be ( multiply all values by their corresponding frequencies or crosses and add ) :-
Now, the total length of ribbon used by Mario = Sum of all the observations
Hence, the total length of ribbon used by Mario 36 feet.
We have been given that the upstream speed is and the down stream speed is
.
Let the fisherman traveled a distance of x miles.
The total time of the trip is 6 hours.
Relations between speed (s), time (t) and distance (d) is
Hence,
Time upstream + time downstream = 6
lcm = 10
=>
Cross multiplying,
x = 20 miles .. Answer.
..................✨✨✨✨✨✨✨✨✨✨✨✨✨✨
