Question
Cole's timing for swimming in his first five heats were 54 s, 57 s, 57 s, 53 s, and 54 s. He wishes to improve his overall average timing by 2 s. What timing must he clock in the sixth heat?
2 m

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Cole's timing for swimming in his first five heats were 54 s, 57 s, 57 s, 53 s, and 54 s. He wishes to improve his overall average timing by 2 s. What timing must he clock in the sixth heat?