John runs a computer software store. He counted 128 people who walked by his store in a day, 60 of whom came into the store. Of the 60, only 21 bought something in the store. Estimate the probability that a person who walks by the store will enter the store. Round your answer to the nearest hundredth.

Group of answer choices

0.47

none of these choices

0.3

0.63

0.16