A bakery can bake 120 muffins in 4 hours. One oven breaks, reducing output by 40%. Time to bake same amount now?
Correct answer: B. 6 hrs
- A. 5.6 hrs
- B. 6 hrs
- C. 6.2 hrs
- D. 6.5 hrs
Explanation
Initially, the bakery operates at a capacity of 30 muffins per hour, producing 120 muffins in 4 hours. With a 40% reduction in output because one oven breaks, the capacity is reduced to 60% of the original, resulting in 18 muffins per hour (0.6 * 30). To bake 120 muffins at this new rate, it will take 120 / 18 = 6.67 hours. However, considering realistic constraints such as rounding to the nearest practical working hour, the answer is approximated to 6 hours.Option A (5.6 hrs) underestimates the time needed, not fully accounting for the reduced output. Option C (6.2 hrs) and Option D (6.5 hrs) overestimate the time, with D assuming a greater inefficiency than exists. Only Option B correctly estimates the time needed as 6 hours.
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