Help-compute-for-the-distance-Math-Assignment-Homework-Help

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An executive drove from home at an average speed of30mph to an airport where a helicopter was waiting. The executive boarded the helicopter and flew to the corporate offices at an average speed of60mph. The entire distance was150miles; the entire trip took three hours. Find the distance from the airport to the corporate offices.

Please provide step-by-step procedures on how to arrive at the answer.