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Q6: Palmer's average running speed is 4 kilometers
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Q8: Solve <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB8311/.jpg" alt="Solve .
Q10: Solve. <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB8311/.jpg" alt="Solve. A)
Q11: Solve. <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB8311/.jpg" alt="Solve. A)
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Q13: Solve. <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB8311/.jpg" alt="Solve. A)
Q14: Solve. <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB8311/.jpg" alt="Solve. A)