A photographer processes 20 photos in 1 hour. If she spends 30 minutes on calls during the session, how many photos in 3 hours
Correct answer: B. 55
- A. 50
- B. 55
- C. 60
- D. 70
Explanation
The photographer processes 20 photos per hour, translating to 1 photo every 3 minutes. Over a span of 3 hours, which equals 180 minutes, the 30 minutes spent on calls must be subtracted, leaving 150 minutes of effective working time. Given the rate of processing, she can complete 50 photos in this time. Adding the 5 photos processed in the remaining 30 minutes of the first hour, she processes a total of 55 photos. Other options fail to correctly adjust for the interruption or miscalculate the processing rate.
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