71% of 40 is 28.4
Divide 28.4 by 40:

Change the decimal to a percentage by multiplying by 100:
Answer:
Tim will get 8 and Sam will get 32
Step-by-step explanation:
I dont quite know whits being asked, but the missing value is 30
Answer:
3 3/4 hours
Step-by-step explanation:
If Henry can fill 2 shelves in the time it takes Jacob to fill one, working together they can fill 3 shelves in 3/4 hour, an average rate of 1/4 hour per shelf. It will take them 15 times 1/4 hour to fill 15 shelves.
Henry and Jacob working together can fill 15 shelves in 3 3/4 hours.