Find the value of x, if 18 ∶ 20 ∷ 9 ∶ x are in the proportion.
(a) 20 (b) 180 (c) 10 (d) 9
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Answer:
x=10
Step-by-step explanation:
18 × X = 18x
20×9=180
18x= 180
x=10
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