Multiple choice

Ramu and Shyamu undertake to do a piece of work for Rs.7200. Ramu alone can do it in 8 days and Shyamu alone can do it in 12 days. With the help of Raju they finish it in 4 days. Then the share of Raju (in Rupees) is - रामू और श्यामू एक काम को 7200 रूपये में करने का ठेका लेते हैं | अकेले रामू इसे 8 दिनों में कर सकता है और श्यामू अकेले इसे 12 दिनों में कर सकता है । राजू की मदद से वे इसे 4 दिनों में खत्म कर देते हैं। तो राजू का हिस्सा (रुपयों में) है -

  1. Rs.1200

  2. Rs.3000

  3. Rs.3600

  4. Rs.2400

  5. None of these इनमें से कोई नहीं

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Total work = LCM(8,12,4) = 720 units. Ramu's rate = 90 units/day, Shyamu's rate = 60 units/day, combined rate with Raju = 180 units/day. Raju's rate = 180 - 90 - 60 = 30 units/day. In 4 days, Raju does 120 units. Share = (120/720) × 7200 = Rs. 1200. Option A is correct.