Multiple choice

Mohini completes a work in 48 days. Shilpa working with Mohini completes the same work in 36 days. Mohini and Shilpa working on alternate days starting with Shilpa will complete 75% work in how many days? / मोहिनी किसी कार्य को 48 दिनों में समाप्त करती है। शिल्पा मोहिनी के साथ कार्य करते हुये समान कार्य को 36 दिनों में समाप्त करती है। मोहिनी और शिल्पा एकान्तर क्रम में कार्य करते हुए शिल्पा से प्रारम्भ करके 75% कार्य कितने दिनों में समाप्त करेंगे?

  1. 48 days/दिन

  2. 54 days/दिन

  3. 62.5 days/दिन

  4. 75 days/दिन
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Mohini's rate: 1/48 work per day. Combined rate: 1/36 work per day, so Shilpa's rate = 1/36 - 1/48 = 1/144. Working alternate days starting with Shilpa: each 2-day cycle completes 1/144 + 1/48 = 1/36 work. For 75% (3/4) work: 3/4 ÷ (1/36) = 27 cycles = 54 days. Shilpa works on day 1 (odd days), so after 54 days, exactly 75% is complete.

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