First, use front-end rounding to round each number and estimate the answer. Then, find the exact answer.James is taking a road to Calistoga. He has already driven 73.38 kilometers. If the entire distance to Calistoga is 115 kilometers, how much further must James drive?
A. Estimate: 30 kilometers; exact: 42.62 kilometers
B. Estimate: 30 kilometers; exact: 41.72 kilometers
C. Estimate: 40 kilometers; exact: 51.62 kilometers
D. Estimate: 30 kilometers; exact: 41.62 kilometers
Answer: D
Mathematics
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