A doctor said to his compounder “I go to see the patients at their residence after every 3:30 hours. I have already gone to the patient 1:20 hours ago and next time I shall go at 1.40 pm”. At what time this information was given to the compounder by the doctor ?
Explanation
Step 1: Find the time of the last visit
The doctor visits every 3 hours and 30 minutes. If the next visit is at 1:40 p.m., we subtract the interval to find the previous visit time.
Last Visit Time=1:40 p.m.−3:30 hours
Step 2: Find the current time (when the information was given)
The doctor mentioned that he had already gone to the patient 1 hour and 20 minutes ago. This means the current time is 1:20 hours after the last visit.
Current Time=10:10 a.m.+1:20 hours
Final Answer:
The information was given at 11:30 a.m. The correct option is (b) 11.30 a.m.
