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OM PRAKASH MEENA

· started a discussion

· 1 Months ago

blame (Question: 364686.0 )

why u alway provide wrong solution n right answer is option c

Question:

Ram completes 60% of a task in 15 days and then takes help of Rahim and Rachel. Rahim is 50% as efficient as Ram is and Rachel is 50% as efficient as Rahim is. In how many days will they complete the work? 

Options:
A)

13 13 days

B)

8 13 days

C)

5 57 days

D)

7 57 days

Solution:

Ans:(a)


Akshay Kapoor

· commented

· 1 Months ago

Dear Student
Ram after doing the work for 15 days takes help of Rahim and Rachel. Thus the remaining work is 40w which will be completed by Rahim and Rachel along with Ram. Thus the final answer is 40/(4+2+1)=40/7. i.e option(C)
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