If they make four boats in 20 days that means they spent 5 days on each boat. they could make 6 boats in 5 days.
A stem and leaf plot is called a stem and leaf plot because it is a table where each number in a set gets broken up into stems and leaves.
Stem = the first digit, or digits
Leaf = the last digit
Ex: The stem of 32 would be 3 and the leaf would be 2.
The quotient will be less that 34 because 78 divided by 34 is 2
It would be an A if i'm correct.