Answer:
45 : 30 : 15
Explanation:
Ratio:
red : blue : white = 3 : 2 : 1
Actual numbers of cans:
red = 48
blue = 40
white = 15
The ratio is 3 : 2 : 1
Divide each actual number of cans by the corresponding number in the ratio.
red: 48/3 = 16
blue: 20/2 = 20
white: 15/1 = 15
The ratio can also be expressed as 3k : 2k : k
Choose the smallest of the quotients above for k.
For k = 15, the ratio is
3k : 2k : k = 3(15) : 2(15) : 1(15) = 45 : 30 : 15