Solution-How far was the other planet relative to earth

How far was the other planet relative to earth

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Sierra and Harry are twins. Harry stays on Earth while Sierra delivers needed supplies to a colony on a distant planet. Sierra travels to the other plant at a constant speed, delivers the supplies and immediately turns back to Earth at the same speed. When she and Harry meet again, Sierra is exactly 7 years older while Harry is exactly 10 years older.

How far was the other planet relative to Earth, in light years? Please explain your reasoning.

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How far was the other planet relative to earth

Reference no: EM132512909

Reference no: EM132512909

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