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(25)7.5 x (5)2.5 ÷ (125)1.5 = 5?

Correct Answer: 13

Explanation:

Let (25) 7.5 x (5) 2.5 ÷ (125) 1.5 = 5 x
Then, (52)7.5 x (5)2.5 = 5x
(53)1.5



5(2 x 7.5) x 52.5 = 5x
5(3 x 1.5)



515 x 52.5 = 5x
54.5


⟹ 5x = 5(15 + 2.5 - 4.5)


⟹ 5x = 513


x = 13.


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