Answer:
18 : 24 : 30
Step-by-step explanation:
sum the parts of the ratio , 3 + 4 + 5 = 12 parts
divide 72 by 12 to find the value of one part of the ratio
72 ÷ 12 = 6 , then
3 parts = 3 × 6 = 18
4 parts = 4 × 6 = 24
5 parts = 5 × 6 = 30
Then
72 in the ratio 3 : 4 : 5 = 18 : 24 : 30
