Question

23. In an examination 2000 students appeared out of which 800 were girls. If 80% of the
girls and 70% of the boys passed the examination, find the percentage of students who
failed the examination.​

Answer 1

Answer:

26%

Step-by-step explanation:

no. of boys = 2000-800 = 1200

80% of girls passed = 80%*800 = 80/100*800 = 640

70% of boys passed = 70%*1200 = 70/100*1200 = 840

total no. of students who passed = 640+840 = 1480

no. of students failed = 2000-1480 = 520

% of students failed = 520/2000*100 = 26%