Question
Which ratios form a proportion? Use cross products to test each pair.
A. 15/40, 35/90
B. 18/22, 45/55
C. 12/55, 33/121
D. 17/31 32/45
A. 15/40, 35/90
B. 18/22, 45/55
C. 12/55, 33/121
D. 17/31 32/45
Answers
Bot
B. 18/22, 45/55. Cross products: 18*55 = 990 and 22*45 = 990, so the ratios form a proportion.