Write the following ratios in three ways.
(a) The ratio of blue marbles to gray marbles: to
(b) The ratio of total marbles to black marbles: :
(c) The ratio of gray marbles to total marbles: /
There are (2 + 3 + 4 = 9) marbles in all.
Thus, the ratios can be written as:
(a) 2 to 4, 2:4,
(b) 9 to 3, 9:3,
(c) 4 to 9, 4:9,