Some engies require oil to be mixed with gasoline. for every gallon of gas used, 4 ounces of oil should be added. how much gas is needed if 12 ounces of oil are used?

1 gallon of gas requires 4 ounces of oil
X gallons of gas require 12 ounces of oil
1/4 = x/12
4x = 12
x = 12/4
x = 3
.
Therefore , 3 gallons of gas are needed.

step-by-step explanation:

so first find out how much each is worth.

quarter= 25 cents

dime= 10 cents

pennies= 1 cent

then multiply each by how much each is worth.

200                     150                   300

x                         x                     x   1

  25                       10              

                                  300

1000                     1500

+                          

4000                                      

5000                                  

then count 2 from the back and add a period.

$50.00

$15.00

$3.00

and then add them

  $50.00

+

  $15.00

+

    $3.00

$68.00

so sunghee has $68.00

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what level of math? also i don't need to be paid if i can you.