If Cathy receives all the discounts (30%, 20%, 10%, 15%, and an additional 20% Holiday Bonus Bucks discount, how much will she pay for the $90 sweater?

She will pay $30.8448.

Step-by-step explanation:

Consider the provided information.

The price of the sweater is $90.

She gets a discount of 30% it means she needs to pay only (100-30)%=70% of $90.

70% of $90 =

Now she gets a discount of 20% it means she needs to only 80% of $63.

If she gets a discount of 10% on $50.4 it means she needs to pay 90% of 50.4

If she gets a discount of 15% on 45.36 it means she needs to pay only 85% of 45.36

Now she gets an additional 20% holiday Bones Buck discount it means she needs to pay 80% of 38.556

Hence, she will pay $30.8448.

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