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Question:

The sun is 93 million miles from Earth and light travels at a rate of 186,000 miles per second. How long does it take for light from the sun to reach the Earth?

A 8.5 minutes
Explaination

The distance formula is distance equals rate times time, or d = rt. Substituting the known values results in 93,000,000 = 186,000*t. So, t = 500 seconds. Divide 500 by 60 to convert to minutes (8 and 1/2 minutes).