Your doctor gives you pills to take one for every half hour. How long does it require to take all the pills ?

A Half Hour
B One Hour
C One and Half Hour
D Two Hours

Correct Answer: One Hour

You need one hour. You take the first pill at the beginning of the hour, then wait a half hour and take the second pill, then you wait another half hour and take the third and the last pill at the end of the hour.
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