Multiple choice

10 men can complete a piece of work in 15 days. They started work and after five days 10 women joined them and the work has finished in next 5 days. In how many days can 25 women finish the same piece of work? 10 व्यक्ति किसी कार्य को 15 दिन में पूरा कर सकते हैं । उन्होंने कार्य शुरू किया और 5 दिनों बाद 10 महिलायें उनके साथ शामिल हो गई , जिसके परिणामस्वरूप कार्य अगले 5 दिनों में पूर्ण हो गया। यदि 25 महिलायें उस कार्य को करती तो कार्य कितने दिनों में पूर्ण हो जाता?

  1. 4 days/दिन

  2. 5 days/दिन

  3. 6 days/दिन

  4. 8 days/दिन
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

10 men's work per day = 1/150. In 5 days, they complete 5/150 = 1/3 work. Remaining 2/3 work done by (10 men + 10 women) in 5 days, so their combined work = 2/75 per day. 10 women's work = 2/75 - 1/150 = 1/150. So each woman does same work as each man. 25 women's work per day = 25/150 = 1/6. Time = 1 / (1/6) = 6 days.

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