Heidi is 2.1m tall, while Lola is only 1.4m tall. What is their average (mean) height?
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1.525 \text{ m}
1.6 \text{ m}
1.7 \text{ m}
1.725 \text{ m}
1.75 \text{ m}
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Junior Mathematical Challenge 2013 (2013)
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