Light travels at a rate of 1.86 x 10^5 miles per second. if the distance from a star to a planet and its orbit is 32,000,000 miles, find how long it takes to light of the star to reach the planet in seconds.

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Light travels at 1.86x10 to the 5th in another word 1.86000 ( 186k ). The planet is 32,000,000 miles away ( 32 million miles ) 32 million divide by 186k = 172.043010753
There is your answer. IT WILL TAKE LIGHT 172.043010753 ( YOU CAN ROUND IT UP ) SECONDS TO REACH THE PLANET. 
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