Kenji's tea shop has caffeinated tea and decaffeinated tea. the tea shop served 30 caffeinated teas and 45 decaffeinated teas. what percentage of the teas served were caffeinated?

step-by-step explanation:

b, i believe, but not sure.

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

answer: i think you should do the math and pay attention in class : )

step-by-step explanation:

that is truly what   think but if i get the answer i will