Answer:
It will take 3.6 hours to wax a car if they work together.
Step-by-step explanation:
Calvin one hour work = 
Alvin one hour work = 
To find out how much they can do together per hour,
We have to add
and 
= 
=
--------------(1)
They can do
of the job per hour.
If "t" is the time taken to finish the job together, then one hour work
------------------------(2)
Now we have to find the value of "t" by setting the expression (1) and (2) equal.

It can solve by flipping the equation;

t = 3.6 hours
It will take 3.6 hours to wax a car if they work together.
Answer:
141 box tops per day
Step-by-step explanation:
Ok so you start by subtracting 2,000 and 872 you then get 1,128 and because you have to meet the goal in 8 days you divide 1,128 by 8 and the answer you should get is 141!!
I hope this helped let me know if I’m incorrect
Good luck!
Answer:
Step-by-step explanation:
Answer:
6 and 8 minutes
Step-by-step explanation:
The graph shows her speed as being the highest and the table backes it up. 40mph is her top speed