I missed the 6:30 am bus that takes me from home to school in 30 minutes. The school is 15 km from home, so I started walking at 10 km per hour at 6:30 am. At what time will I reach school?

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A 7:30 am
B 8:00 am
C 7:00 am
D 8:35 am

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Answer: B. 8:00 am

Split 15 km into 10 km and 5 km. At 10 km per hour, 10 km takes 1 hour and 5 km takes 30 minutes. Total 1 hour 30 minutes after 6:30 am = 8:00 am.

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I missed the 6:30 am bus that takes me from home to school in 30 minutes. The school is 15 km from home, so I started walking at 10 km per hour at 6:30 am. At what time will I reach school?

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