Question

A town has two shopping malls. A survey conducted on the shopping preferences of the town's residents showed that 62% of the residents visit Comet Mall, 73% of the residents visit Star Mall, and 48% of the residents visit both malls.
The probability that a resident chosen at random shops at either Comet Mall or at Star Mall is
%.

Answer 1

Answer: 87%

To answer this question, you need to know how much % of resident that prefer Comet Mall and Star Mall separately. 

62% of the residents visit Comet Mall but 48% of them visit both malls, so only 14% resident visit Comet Mall only.
73% of the residents visit Star Mall but 48% of them visit both malls, so only 25% resident visit Star Mall only

Then, the chance would be:
%resident visit Comet Mall + % resident visit Star Mall + % resident visit both mall= 14%+25%+48%= 87%.

Answer 2

Answer:

87%

Step-by-step explanation:

14%+25%+48%= 87%

Also I got it correct on PLATO

#platofam