Meera walked to school at a speed of 3 miles per hour. Once she reached the school, she realized that she forgot to bring her books, so rushed back home at a speed of 6 miles per hour. She then walked back to school at a speed of 4 miles per hour. All the times, she walked in the same route.
Quantity I: Her average speed over the entire journey.
Quantity II: 4 mph
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IBPS PO Mains 2017
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