Which ratios form a proportion?
(A)3/15,12/55
(B)8/24,12/35
(C)5/18,25/90*^*
(D)4/11,16/25
If I'm wrong please help me and correct me, don't yell at me for not knowing the right answer.
You suck guys
To determine which ratios form a proportion, we need to check if the ratios are equivalent to each other. An equivalent ratio means that the fractions have the same value.
To compare two ratios, we can cross-multiply and see if the products are equal. If the products are the same, the ratios form a proportion.
Let's go through each option and check:
(A) 3/15, 12/55
To cross-multiply, we multiply 3 by 55 and 15 by 12:
(3 * 55) = 165
(15 * 12) = 180
Since 165 and 180 are not equal, the fractions 3/15 and 12/55 do not form a proportion.
(B) 8/24, 12/35
Cross-multiplying:
(8 * 35) = 280
(24 * 12) = 288
Since 280 and 288 are not equal, the fractions 8/24 and 12/35 do not form a proportion.
(C) 5/18, 25/90
Cross-multiplying:
(5 * 90) = 450
(18 * 25) = 450
Since 450 and 450 are equal, the fractions 5/18 and 25/90 do form a proportion.
(D) 4/11, 16/25
Cross-multiplying:
(4 * 25) = 100
(11 * 16) = 176
Since 100 and 176 are not equal, the fractions 4/11 and 16/25 do not form a proportion.
Therefore, the correct answer is (C) 5/18, 25/90. These two ratios do form a proportion.
Remember, if you're unsure about the answer, it's always better to ask and learn!