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Question

Ram and Rahim working together can complete 40% of a piece of work in 4 days. Find the time required by Ram to complete the work, while working alone, if it is known that Rahim would have taken 10 days to complete 50% of the work while working alone.

राम और रहीम एक साथ कार्य करके एक कार्य को 40% भाग, 4 दिन में पूरा कर सकते हैं। यदि यह ज्ञात है कि रहीम अकेले काम करते हुए 50% कार्य पूरा करने में 10 दिन लेता है, तो राम को कार्य पूरा करने में कितना समय लगेगा?

A
12 days

12 दिन
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B
20 days

20 दिन
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C
10 days

10 दिन
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D
8 days

8 दिन
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Solution

The correct option is B 20 days

20 दिन
Time taken by the two to complete the task = 4×10040=10 days
Time taken by Rahim to complete the work 10×10050=20 days
Let Ram takes x days to complete the work.
(110120)×x=1X=20 days

दोनों लोगों द्वारा कार्य को पूरा करने के लिए लिया गया समय = 4×10040=10 days
रहीम द्वारा कार्य को पूरा करने के लिए लिया गया समय = 10×10050=20 days
माना कि राम कार्य को पूरा करने के लिए x दिन लेता है।
(110120)×x=1X=20दिन

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