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Answer is option 4 (i.e) 400

by kishore » Sat Oct 10, 2009 1:52 pm
x+43+17+12+3 = 100
x+75 = 100
x = 25


75% of them are delayed which is equalt to 1200

75/100 * x = 1200

x = 1600

25% are on time

25/100 * 1600 = 400
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