Difficulty: Easy
Correct Answer: 142
Explanation:
Introduction / Context:
The sum combines a division near 65 with a product a little over 77. Keeping each term accurate to 0.5 is enough to choose among the options in the 130–150 range confidently.
Given Data / Assumptions:
Concept / Approach:
Approximate Term1 with 1560/24 = 65. Term2 is close to 11*7 = 77; small adjustments push it near 77.03. Sum around 142 confirms the nearest option.
Step-by-Step Solution:
Verification / Alternative check:
Exact calculation yields about 142.02, confirming 142 is the best choice relative to the other options.
Why Other Options Are Wrong:
137 and 132 are too low; 152 is too high versus the tight sum around 142.
Common Pitfalls:
Over-rounding 1559.999/24.001 to 65 and then subtracting a large correction; the correction is tiny and does not change the nearest option.
Final Answer:
142
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