Abaker purchased 12 lb of wheat flour and 15 lb of rye flour for a total cost of $18.30. a second purchase at the same prices, included 15 lb of wheat flour and 10 lb of rye flour. the cost of the second purchase was $16.75. find the cost per pound of the wheat flour and the rye flour.

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