Which pair of ratios form a proportion?

3 : 4 and 4 : 5

10 : 12 and 16 : 18

7 : 10 and 10 : 14

5 : 8 and 20 : 32

welll its a very hard question but ill

step-by-step explanation:

first you take the 6 dollars and add 10 to it then add the 50 to that then multiply by 8 with xy and your answer will be

hope this

the answer is simply just 6n add the two together as they have an n