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i have my doubts for b -> it just mentions numbers and not % can we solve it anyway? i am not sure but i think Stat I and Stat II should come to the same result or?

Of a group of people surveyed, 75% have a computer, 62% have a cd burner. What percent of the people have a computer but not a cd burner?

I. 11% of the people have a cd burner but not a computer II. The number of people who have both is 3 times the number of people that have neither

I think it is A because this is a trick question. tomg brought up a good point

the second is only talking about numbers and not percentages.

there for you can't use 3x and x. in that equation for the venn diagram
for all we know it can be 1 and 3 or 3 and 9 or whatever. The answer will result in different numbers.

Of a group of people surveyed, 75% have a computer, 62% have a cd burner. What percent of the people have a computer but not a cd burner?

I. 11% of the people have a cd burner but not a computer II. The number of people who have both is 3 times the number of people that have neither

i go with B.

75-3x+62-3x+x=100 x = 37/2=18.5%

sorry guys. i didnot read the question properly so i overlooked it. i should correct it.

from i,
computer =75
cd =62
only cd= 11
c+cd= 62-11=51
only computer = 75-51=24
so the percent of the people who have a computer but not a cd burner = 24

from ii,
nither = x
both = 3x

c+cd- both + nither = 100
75 + 62 -3x + x = 100
2x = 137-100
x = 37/2

this also gives the answer but the answers are contradictory to each other. therefore, this question is also poorly worded.