Question

Which two ratios form a proportion?

А) 3:4 and 6:12
B) 3 : 4 and 9:15
C) 3:4 and 12 : 18
D) 3:4 and 15:20

Answer 1

Answer: D

Step-by-step explanation: If you multiply both numbers by 5, they come out to the second set of numbers.