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Question

(64/25)?× (125/512) ? - 1 = 5/8

A 2 Correct Answer Incorrect Answer
B 8 Correct Answer Incorrect Answer
C 4 Correct Answer Incorrect Answer
D 3 Correct Answer Incorrect Answer
E None of these Correct Answer Incorrect Answer

Solution

⇒ (8/5)2x× (5/8) 3x - 3 = 5/8 ⇒ (5/8)-2x× (5/8) 3x - 3 = 5/8 ⇒ (5/8) -2x + 3x - 3= 5/8 ⇒ (5/8) x - 3 = 5/8 ⇒ x - 3 = 1 ⇒ x = 4

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