Question

In a survey carried out on a group of 11 to 18 year-olds it was reported that 80% owned
a personal stereo and 60% owned a bicycle.
Which one of the following hypotheses can be confirmed from the information given?
A Half of those having a personal stereo also had a bicycle.
B All those surveyed had either a personal stereo or a bicycle.
C Half of those who had a bicycle did not have a personal stereo.
D 1 in 5 of those surveyed had neither.

Answer 1

Answer:

D -  1 in 5 of those surveyed had neither.

Step-by-step explanation:

80 % had atleast one of the items

so 80/100 had atleast 1 of them

so 4/5 had atleast 1 of them

so 1/5 had neither

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