John skateboarded for 10 miles and then walked another 4 miles to the park. He then skated all the way back home. How many miles has John skateboarded in total? Think carefully first, then make a decision:
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John traveled 10 + 4 = 14 miles to the park. His round trip would take 14 x 2 = 28 miles. If you subtract the 4 miles he walked then John traveled 28 - 4 = 24 miles. So, the answer is 24.
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