PLZ HELP!!!!
Which ratios form a proportion? a. 4/9, 12 / 25 b. 3 / 7, 18 / 42 c. 5/11, 20/45 d. 5/8,
15/25. 2. Which ratio forms a proportion with 18 over 30? a. 20 / 35 b. 50 / 90 c. 36 / 48 d. 60 / 100. 3. Which proportion has cross products of 5 × 24 and 8 × 15? a. 5/8=15/24 b. 5/24=8/15 c 8/24=15/5 d 15/8=5/24