Sandy mixed together 9 gallons of one brand of juice and 8 gallons of a second brand of juice, which contains 48 percent real fruit juice. Find the percent of real fruit juice in the first brand if the mixture contained 30 percent real fruit juice. Which of the following equations could be used to solve this? Group of answer choices

a(9)+48(8)17=0.30100

a(9)+0.48(8)17=30100

a(9)+0.48(8)a+0.48=30100

a(9)+0.48(8)17=30