Answer:
18 : 6
Step-by-step explanation:
sum the parts of the ratio , 3 + 1 = 4 parts
divide the quantity by 4 to find the value of one part of the ratio
R24 ÷ 4 = 6 ← value of 1 part of the ratio, then
3 parts = 3 × 6 = 18
Then R24 in the ratio 3 : 1 = 18 : 6
