Try looking it up becaus hard to understand
5x + 20
5(x) + 5(4)
5(x + 4)
Answer:
40 quarts.
Step-by-step explanation:
Let x =quarts of the 50% solution
so, according to the question
the typical mixture equivalent equation will be like this

so the answer will be 40 quarts of 50% solution should be added.
I don’t know but it is really annoying and they need to stop. they are virus’