Answer:
120% increase
Step-by-step explanation:
It is given in the question that
Anna buys 12 pens and 20 pencils for a total cost of $16. One pen costs $0.40 more than a pencil.
Let the cost of pencil is $ x .
Therefore cost of pen is

According to the question

Distributing 12 and combining like terms, we will get

Therefore cost of pencil is $0.35 and cost of pen is

The second one, and you as well ☺️
Answer:
b
Step-by-step explanation:
brainliest????
Answer:

Step-by-step explanation:
Our equation is:

First we dritribute
Now we have, 
light terms
and we get 