In an examination 1100 boys and 900 girls Appeared. 50% of the boys and 40% of the girls passed the Examination. The percentage of candidates who failed is
Total boys = 1100 and girls = 900
Boys who passed = $$\frac{50}{100}\times1100=550$$
=> Boys who failed = $$1100-550=550$$
Girls who passed = $$\frac{40}{100}\times900=360$$
=> Girls who failed = $$900-360=540$$
Thus, percentage of candidates who failed = $$\frac{(550+540)}{(1100+900)}\times100$$
= $$\frac{1090}{20}=54.5\%$$
=> Ans - (D)
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