Answered

John runs a computer software store. Yesterday he counted 133 people who walked by the store, 62 of whom came into the store. Of the 62, only 29 bought something in the store
What is the probability that a person comes in AND buys something?

Verified Answer :

sirwill007

To figure the percentage you divide the number of people
buying by the number of people that walk by. 29/133= 21.8% (approximately)

The more complicated way would be to figure out the
percentage of people that enter the store first. 62/133 = 46.61% (approximately)

Then figure the percentage of people entering the store that
buy something. 29/62 = 46.77% (approximately)

If you multiply the two percentages together, you will get
the percentage of people that enter the store and buy something versus the
number of people that walk by the store. .4661 * .4677 = 21.799% (approximately)

I use the word approximately because of rounding. 

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