Question

In an examination 2500 students appeared out of which 1100 were girls . 50 percent of the boys and 40 percent of the girls passed in examination . What percent of the candidates failed in the exam

Answer 1

Given:2500 students are present in the examination
1100 were girls.
Therefore,2500-1100=1400 were boys.
50% of boys passed in the examination.
40% of girls passed in the examination.
Therefore Find:Percent of candidates failed in the examination.
Solution:50% of candidate failed in the examination.

Answer 2

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$Total \: number \: of \: student = 2500 \\ No. \: of \: Girls = 1100 \\ No. \: of \: Boys = 2500 - 1100 \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = 1400 \\ \\ No. \: of \: Boys \: passed = \frac{1400 \times 50}{100} \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = 700 \\ No. \: of \: Girls \: passed = \frac{1100 \times 40}{100} \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = 440 \\ \\ Total \: no. \: of \: Students \: passed = 700 + 440 \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = 1140 \\ Total \: no. \: of \: Students \: failed = 2500 - 1140 \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = 1360 \\ \% \: of \: Student \: failed = \frac{1360}{2500} \times 100\% \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = \frac{272}{5} \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = 54.4 \\ \\ Ans. \: 54.4\%$