Question 12
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A can finish a job in 16 days, and B is 60% more efficient than A. How long will B alone take?
- A 6.4 days
- B 10 days Correct
- C 9.6 days
- D 12 days
Correct Answer: Option B
B's rate = 1.6 × A's
B's time = 16 ÷ 1.6 = 10 days
Trap: 9.6 days takes 40% off the time.
Answer: 10 days
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