Which ratios form a proportion? A. 3/5, 12/55
B. 8/24, 12/35
C. 5/18, 24/90
D. 4/11, 16/25

Letter A

Step-by-step explanation:

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B. 8/24, 12/35

Step-by-step explanation:

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the multiples of 15 are 15, 30,45, 60, 75, 90, 105, 120, 135, 150, 165, 180, 195,   210, 225, 240, 255, 270, 285, 300, 315, 330, 345, 360, 375,   390, 405, 420, 435, 450, 465, 480, 495, 510, 525, 540, 555, 570, 585, 600, 615, 630, 645, 660, 675, 690, 705, 720, and 735.

the factors of 15 are 1, 3, 5, and 15.

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there would only be 50 odd numbers between 1 and 100 so therefor there would be 50 even so that would only be 50 odd numbers.