Answer:

48:80:128

Step-by-step explanation:

Identifying Ratios

Get the sum of ratio ( a + b + c )

> 3 + 5 + 8 = 16

Divide 256 by the answer (16)

256 ÷ 16 = 16

16 is your base

multiply the base to the ratio

a: 16 * 3 = 48

b: 16 * 5 = 80

c: 16 * 8 = 128

to cross-check, let us see if the answers total 256

48

+ 80

+ 128

= 256

therefore, answer is 48:80:128