Answer:
24 : 56
Step-by-step explanation:
sum the parts of the ratio, 3 + 7 = 10 parts , then
80 ÷ 10 = 8 ← value of 1 part of the ratio , then
3 parts = 3 × 8 = 24
7 parts = 7 × 8 = 56
80 in the ratio 3 : 7 is 24 : 56
