Math
posted by Loomin .
Determine which ratio forms a proportion with 9/5 by finding a common multiplier?
54/30
45/50
45/40
90/20
Determine which ratio forms a proportion with 12/7 by using cross products?
60/35
24/10
36/14
18/14
Which ratio can from a proportion
20/25,14/21
10/23,18/7
5/45,4/36
5/4,4/5

9/5
The numerator is almost double the denominator. That eliminates three of the answers.
54/30 54/9 = 6; 6 * 5 = 30. Yep; this is right.
45/50
45/40
90/20
You can use the same reasoning on the other two problems.
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