Question

About 42% of a paint mix is white. A painter orders 18 gallons of the paint mix. How much of it is white?

Answer 1

If 42% of paint is white to get the result we just have to finid 42% of 18. 
42% of 18 = 0.42*18=7.56$ - its our result

Answer 2

7.56 gallons
18
•0.42
Equals
7.56