Saved Bookmarks
| 1. |
mple 4. In a town of 10,000 families it was found that 40% families buy news paper A, 20%Exafamilies buy news 10% famil es buy new paper C, 5% families buy A and B y buy Bnd C, and 4% buy A and C. If 2% families buy all the three news paper, then (i) find the number (families which buy A only (i) the number of families which buy none off A, B and C newspaperpaper B and |
|
Answer» Total Number of Families (N) = 10,000a) Number of families which buy Newspaper A = 40%*N +5%N + 4%N +2%N = 40/100*10000 + 5/100*10000 + 4*100*10000 + 2/100*10000 = 10000/100(40+5+4+2) = 100(51) = 5100 b) Number of Families which doesn't buy Any NewsPaper = (100 - (40+20+10+5+3+4+2))%N = (100 - 84)%N = 16%N = 16/100*10000 = 16*100= 1600 |
|