UPSKILL MATH PLUS

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A statement of Assertion \((A)\) is followed by a statement of Reason \((R)\). 
 
Choose the correct option
 
Assertion \((A)\): If \(2:3 :: 10:15\), then \(2 \times 10 = 3 \times 15\).
 
Reason \((R)\): In a proportion, the ratio of first to second equals the ratio of third to fourth.