What should come in place of the question mark (?) in the following questions ?
Expression : 15% of 524 - 2% of 985 + ? = 20% of 423
=> $$(\frac{15}{100} \times 524) - (\frac{2}{100} \times 985) + x = (\frac{20}{100} \times 423)$$
=> $$78.6 - 19.7 + x = 84.6$$
=> $$x = 84.6 - 58.9 = 25.7$$
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