There are 21 poles with a constant distance between each pole. A car takes 30 seconds to reach the 16th pole. How long does it take to reach the last pole?

There are 21 poles with a constant distance between each pole. A car

1.	There are 21 poles with a constant distance between each pole. A car takes 30 seconds to reach the 16th pole. How long does it take to reach the last pole?
A.	39 seconds
B.	40 seconds
C.	39.38 seconds
D.	39.5 seconds
Answer» C. 39.38 seconds

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There are 21 poles with a constant distance between each pole. A car takes 30 seconds to reach the 16th pole. How long does it take to reach the last pole?

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