Interchange two signs in this equation to make it true: (24 + 8) × 3 - 6 ÷ 2 + 1 = 52. Which signs should be interchanged?
Correct answer: B. + and -
- A. + and ×
- B. + and -
- C. + and ÷
- D. - and ×
Explanation
Swap + and -. The equation becomes (24 - 8) × 3 + 6 ÷ 2 + 1, which equals 48 + 3 + 1 = 52. The other listed swaps give different results.
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About Quantitative Reasoning
Quantitative reasoning applies arithmetic and basic algebra to numerical relationships, including percentages, ratios, averages, fractions, proportions, profit and loss, rates, time, work and measurement. Questions focus on translating words into equations, choosing an efficient method and checking whether the result is numerically reasonable.
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