12 x b = 480
12 x 40 = 480
The answer is 40
To solve this problem you must apply the proccedure shown below:
1. You have the folllowing expression given in the problem above:

2. The first thing you must do is to factor the denominator, as following:

3. Now, simplify it and apply the distributive property in the denominator:

The answer is: 
To change a fraction to a decimal divide the numerator by the denominator. 6÷11=.5454545454545 ANSWER: .5454545454545
Well we know that he can paint 350 square feet in 1.25 hours. To find how much he can paint in 1 hour, we would divide 350 by 1.25. 350 divided by 1.25 = 280, therefore his painting rate is 280 square feet per hour.