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Which of the following equations of ratios make a true proportion?

Which of the following equations of ratios make a true proportion?-example-1

2 Answers

6 votes
A)
(15)/(90) = (3)/(18)
15 ÷ 3 = 5
90 ÷ 18 = 5

B)
(17)/(19) = (51)/(93)
51 ÷ 17 = 3
93 ÷ 19 ≈ 4.9

C) None of these choices are correct

D)
(20)/(100) = (5)/(40)
20 ÷ 5 = 4
100 ÷ 40 = 2.5

E)
(120)/(100) = (5)/(6)
120 ÷ 5 = 24
100 ÷ 6 ≈ 16.7


Having done the math, the answer is A.
User Diego Bianchi
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6.1k points
6 votes
The first choice is correct. We can check it by cross multiplication.      15x18=270 also 3x90=270.
User Jonathan Laliberte
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6.2k points