How do i solve for x 30x - 60 = 20x i already know x equals 6, but i dont know how to get the answer

Determine the number of girls in a math class with 87 boys if there are 25 girls for every 75 boys

Awater truck is filling a swimming pool. the equation that represents this relationship is y=19.75x where y is the number of gallons of water in the pool and x is the number of minutes the truck has been filling the pool.

Answer 20 points and brainiest ! on the board, your teacher writes an example of how to find the median. one of the numbers is erased, leaving what is shown, 18, 30, 26,12 22. what is the median? a. 10 b. 20 c. 24 d. 28