human
TJ ran a 10K race last Saturday. He ran the first half in 20 minutes. He completed the second half in 30 minutes. What was his average time per kilometer?
assistant
How many minutes did TJ run the 10K race? ** He ran the 10 kilometers in a total of 20 + 30 = <<20+30=50>>50 minutes.
What was TJ's average pace per kilometer? ** Therefore, he ran at a pace of 50 minutes / 10 kilometers = <<50/10=5>>5 minutes per kilometer.
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