hi guys, can you guys please help me , "I thought of a number. I halved it, then added 9. The answer was 45, What number did I think of?" What is the answer? can you guys tell me and give me the working out thanks !

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

b

step-by-step explanation:

u take $75 minus $60.the anwer/original($75)multiply by 100