Question

in a town 85% use bicycle, 40% use motorbike and 20% use car, also , 32% use bicycle and motorbike 13% use bicycle and car and 10% use motorbike and car find the percentage of people who use all the three types of vehicals

b82d7cfa56362fbdc6b7ff7d218c9c40.doc

Answer 1

Consider the total to be 100
on further calculation I got the answer to be 30
tell me if u want the working

Answer 2

b = bicycle ,m = motorbike ,c = car
% b = 85 ,% m = 40 ,%c = 20 %(b intersection m) = 32, %(m intersection c) = 10,%(c intersection b) = 13 ,%(b union m union c) = 100 , %(b intersection m intersection c) = ?
apply formula
(b union m union c) = b + m + c - (b intersection m) - (m intersection c) - (c intersection b) + (b intersection m intersection c)
100 = 85 + 40 + 20 - 32 - 10 - 13 + (b intersection m intersection c)
(b intersection m intersection c) = 10
hence percentage of people who use all the three type of vehicals = 10%