Total students visited town A is how much more than total students visited town C?
Answer : Option C
Explanation : Total students visited only town A = 400× =80
Total students visited only town B = 80×=68
Total students visited only town C = 400×=72
Total students visited town A & B but not C = 68 -8 = 60
Total students visited town B & C but not A = =30
Total students visited A & C but not B = = 70
Total students visited all the three towns
= 400 – (80 + 68 +72+60+30+70) = 20
Total students visited town A
= 80 + 60 + 70 + 20 = 230
Total students visited town C
= 72 + 30 + 70 + 20 = 192
Required difference = 230 – 192 = 38
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