Multiple choice

Due to fever efficiency of Ramesh is reduced by 40% hence he takes 12 more days than earlier to complete. If next day he starts working with 50% of his original efficiency. Now in how many days he will complete the total work? बुखार के कारण रमेश की क्षमता 40 प्रतिशत कम हो गई अतः वह कार्य करने में 12 दिन अधिक लेता है। यदि अगले दिन वह प्रारम्भिक क्षमता के 50% पर कार्य करें तो वह कार्य कितने दिनों में समाप्त करेगा?

  1. 36

  2. 30

  3. 45

  4. 60

  5. None of these इनमें से कोई नहीं
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A Correct answer
Explanation

At 60% efficiency, Ramesh takes 12 extra days. Original efficiency = 100%, reduced = 60% (3/5). Time ratio = 5:3, difference = 2 parts = 12 days, so 1 part = 6 days. Original time = 30 days at 100%. At 50% efficiency (half speed), he takes 30 ÷ 0.5 = 60 days total.

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