Answer:
1/2+1/4= 3/4 or 0.75
Step-by-step explanation:
Answer:
146 feet below the surface
Step-by-step explanation:

x + 4x = 40
5x = 40
x = 8
Mrs. Viola has 8 and Mrs. Rullo has 4*8=32 pens.
To solve you first need to pick out the most important information,
~Spent 20 minutes
~Each prob takes 2 minutes
Lets have y be the total time spent, and x the number of probs
(y/2) = x
Hope this helped!! ^-^