The ratio of cows to horses on Farm A is 14:12.The ratio of cows to horses on Farm B is the same.
A.5 cows to 6 horses
B.18 cows to 14 horses
C.20 cows to 6 horses
D.21 cows to 18 horses
Which of the following is a possible scenario for Farm B?
Details:
Answers (1)
The answer is D. (21 cows to 18 horses)
Using proportions I figured out whether each pair of ratios were equal or not:
5/6 = 14/12
Cross multiplying these ratios give me: 84 = 60, which isn't true, let's move on to B.
18/14 = 14/12
Cross multiplying these ratios give me: 196 = 216, which again is unequal, moving along to choice C.
20/6 = 14/12
Cross multiplying these ratios give me: 240 = 84, which is unequal, moving along to choice D.
21/18 = 14/12
Cross multiplying these ratios give me: 252 = 252! This is equal, which makes D. correct.
Hope this helped!