A certain shade of purple paint is created by mixing 4 pints of red paint with 7 pints of blue paint. How many pints of blue paint must be mixed with 20 pints of red paint?

?

Step-by-step explanation:

use an equation of ratios to determine the amount of gas needed to fill the tank.

    0.2             0.8

  =    

288.75             x

                                                              231 gal

so, 0.2x = (0.8)(288.75 gal), and x = = 1155 gal.

                                                                0.2

it would take 1155 gal. to fill the tank.

the cost would be

1155 gal         $3

* = $3465   (answer)

      1           1 gal

hope this you

do have an equation or graph or

step-by-step explanation: