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Question

If \(\dfrac{-3}{5}= \dfrac{-24}{x}\), then \(x= \)
(A) \(40\)
(B) \(-40\)
(C) \({\pm }\) \(40\)
(D) None

Answer

Answer: A
\(\cfrac{-3}{5} =\cfrac{-24}{x}\)
\(\Rightarrow -3 \times x=-24 \times 5\)
\(\Rightarrow x=\cfrac{-24 \times5}{-3} =40\)
\(\Rightarrow x=40\).
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