Instructions

What should come in place of the question mark (?) in the following questions?

Question 126

27% of 450 - ? % of 375 = 76.5

Solution

Expression : 27% of 450 - ? % of 375 = 76.5

=> $$(\frac{27}{100} \times 450) - (\frac{x}{100} \times 375) = 76.5$$

=> $$121.5 - 3.75x = 76.5$$

=> $$3.75x = 121.5 - 76.5 = 45$$

=> $$x = \frac{45}{3.75} = 12$$


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