During a heavy rainstorm a river became flooded. The flood waters still have 2 3 23 of the way to go back down until the depth of the water is at the normal level. If it continues to recede at a rate of 1 9 19 the flood level per hour, how many more hours will it take for the water to reach its normal depth?

i am thinking c. sorry if im wrong .

step-by-step explanation:

step-by-step explanation:

the ratio of red paint to blue paint is always 9/7. that means that, whatever x's value, (4x+12)/(4x-4) has that same ratio. so, set up an equation and cross-multiply to solve for x:

9/7 = (4x+12)/(4x-4)

9(4x-4) = 7(4x+12)

36x - 36 = 28x + 84

8x - 36 = 84

8x = 120

x = 15