no of pupils pupil from first school for examination= 75
No. of pupil passed = 80% of 75 = 60
No. of pupil from second school = 85
No .of pupil passed from 2nd school = 55
Pass % from second school = 55/85 X 100 = 64.70%
Let total number of votes enrolled = x
No. of voted cast = 70% of x = 0.7x
Valid votes = 98% of 0.7x
? 60% of total valid votes = 7203 = 60% of 98% of 0.7x
? 0.6 X 0.98 X 0.7x = 7203
? x = 7203 / (0.6 X 0.98 X 0.7)
? x = 17500
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