Question

In an examination 2500 students appeared out of which 1100 were girls. 50% of the boys and 40%
of the girls passed the examination. What percentage of the candidates failed in the examination?​

Answer 1

Answer:

1100 were girls. Therefore,2500-1100=1400 were boys. 50% of boys passed in the examination. 40% of girls passed in the examination.

Answer 2

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Here is the solution:

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Find the number of boys:

Number of boys = total - number of girls

Number of boys = 2500 - 1100 = 1400

Find the number of students that passed:

boys = 50% x 1400 = 0.5 x 1400 = 700

girls = 40% x 1100 = 0.4 x 1100 = 440

Total students that passed = 700 + 440 = 1140

Find the number of students that failed:

Number of students failed = Total students - students that passed

Number of students failed = 2500 - 1140 = 1360

Find the percentage of candidates that failed:

Percentage that failed = failed/total x 100

Percentage that failed = 1360/2500 x 100 = 54.4%

Answer: 54.4% failed the examination