Difficulty: Easy
Correct Answer: 1000
Explanation:
Introduction / Context:
Convert the division by 25 to a multiplication by 4/100 for quicker mental math: dividing by 25 equals multiplying by 0.04. Then scale by 31.05 and add 101. Options are in the hundreds, so a tight estimate suffices.
Given Data / Assumptions:
Concept / Approach:
First compute 724/25 exactly as 28.96. Multiply by 31.05, then add 101 and pick the nearest hundred-level option.
Step-by-Step Solution:
Verification / Alternative check:
Even if 31.05 were rounded to 31, product 28.96*31 = 897.76; add 101 = 998.76 still closest to 1000.
Why Other Options Are Wrong:
900 and 950 are too low; 1050 is too high. 1000 is closest to ~1000.21.
Common Pitfalls:
Approximating 724/25 as 29 without adjusting can push the result slightly higher, but the nearest option remains 1000.
Final Answer:
1000
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