How many ounces of a 12 alcohol solution must be mixed with 6 ounces of a 20% alcohol solution to make a 16% alcohol solution?

6 ounces

Step-by-step explanation:

So set your equation up as

12(x)+20(6)=16(x+6)

You set it up this way because with the first number you know the percet but not the ounces so your ounces would be x. The second set you know percet and ounces (the percent will alway go outside the parenthesis). then the last number is waht it wil equal; again we know the percent but not the product. We put x+6 in the parenthesis because you are adding the ounces your don't know(x) wiht the ones you do (6).

To solve distribute

12x+120=16x+96

Now all you have to do is solve for x. Subtract the 96 over then subtract the 12x over, so it would look like this.

12x+120=16x+96

      -96         -96

12x+24=16x

-12x       -12x

24=4x    Now simply divide by 4 and you get 6=x

i used to know how to do this in 7th but i forget easily

step-by-step explanation:

30 miles

step-by-step explanation:

we know that 60 seconds equals 1 minute and 60 minutes 1 hour

44 ft       60 sec     60 min     158400   ft

  *   *   =

1 sec       1 min       1 hour         hour

we know that there are 5280 ft per mile

158400   ft       1 mile         30 miles

  *   =

1   hour               5280 ft     1 hour

so in 1 hour   it can travel 30 miles