Instructions

What approximate value will come in place of question mark (?) in the given questions? (You are not expected to calculate the exact value)

Question 75

$$2775\times\frac{160}{\sqrt{(?)}}=5550$$

Solution

Expression : $$2775\times\frac{160}{\sqrt{(?)}}=5550$$

=> $$\frac{160}{\sqrt{(x)}} = \frac{5550}{2775} = 2$$

=> $$\sqrt{x} = \frac{160}{2} = 80$$

=> $$x = (80)^2 = 6400$$

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