John traveled for \(12\) hours. What was his total average (arithmetic mean) speed?

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A

B

C

D

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John traveled for \(12\) hours. What was his total average (arithmetic mean) speed?

1) For the first \(4\) hours, he traveled at \(60\) miles per hour

2) For the last \(8\) hours, he traveled at \(50\) miles per hour

The OA is C
Source: — Data Sufficiency |