Ravi started doing his homework at 3:50 pm and finished at 6:15 pm. How long did he take?
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Worked Solution
Step 1: 6 h 15 min − 3 h 50 min. The minutes 15 < 50, so borrow 1 hour.
Step 2: Rewrite as 5 h 75 min − 3 h 50 min.
Step 3: Minutes: 75 − 50 = 25 minutes.
Step 4: Hours: 5 − 3 = 2 hours.
Answer: 2 hours 25 minutes.
Correct answer: 2 hours 25 minutes
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