If 1 book costs 1.95 pound how much do six books cost

To solve this problem, you will need to set up a proportion.

Let x = the unknown cost of the books.

Assuming the cost of books stays constant, you can crossmultiply and solve for x.

x = 1.95(6)

x = 11.70

Six books will cost $11.70 if 1 book cost $1.95.

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