1.

$$45\% of 300 + \sqrt{?} = 56\% of 750 -10\% of 250$$1). 1302). 603). 2604). 67600

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Solution

Expression : $45\% of 300 + \sqrt{?} = 56\% of 750 -10\% of 250$

=> $(\frac{45}{100} \times 300) + (\sqrt{?}) = (\frac{56}{100} \times 750) - (\frac{10}{100} \times 250)$

=> $135 + \sqrt{?} = 420 - 25$

=> $\sqrt{?} = 395 - 135 = 260$

=> $? = 260^2 = 67600$



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