First, use front-end rounding to round each number and estimate the answer. Then, find the exact answer.Mr. Buttimer took a plane trip for a total of 6.13 hours. He watched an in-flight movie for 1.54 hours. From the airport, he took a cab ride for 0.51 hour to the train station. Next, he took the train home for 2.27 hours. What was the total time spent traveling?
A. Estimate: 12 hours; exact: 10.45 hours
B. Estimate: 11 hours; exact: 10.45 hours
C. Estimate: 9 hours; exact: 8.91 hours
D. Estimate: 11 hours; exact: 8.91 hours
Answer: C
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