Multiple choice

A work twice as that of B and thrice as that of C.If B and C working together completes a work in 15 days, then A working alone will complete the whole work in how many days? A, B से दो गुना तथा C से तीन गुना कार्य करता है यदि B तथा C मिलकर किसी कार्य को मे 15 दिनों में पूरा करते हैं, तो A अकेले पूरे कार्य को कितने दिनों में पूरा करेगा?

  1. 15 days 15 दिन

  2. 12.5 days 12.5 दिन

  3. 18 days 18 दिन

  4. 24 days 24 दिन

  5. None of these इनमे से कोई नहीं
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Let C's rate=1 unit/day. Then A=3 units/day (thrice C), B=1.5 units/day (half A). B+C combined rate=2.5 units/day. In 15 days: 2.5×15=37.5 units total work. A alone: 37.5÷3=12.5 days.

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