Ralph is a member of the cross-country relay team. There are four other members on the team who run 3 km to complete their part of the race. Ralph runs twice as much as any member on his team to complete his part of the race. How long is the race? Give me reasons, before answering the question
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4 team members each run 3 km, so 4 x 3 = 12 km. Ralph runs twice as much as any team member and since team members each run 3 km, Ralph runs 2 x 3 km = 6 km. The length of the race is 6 km run by Ralph + 12 km run by the rest of the team = 18 km. So the final answer is 18.
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