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Ayush Mishra

· started a discussion

· 1 Months ago

TOTAL EFFICIENCY SHOLD BE 7. Should't it? (Question: 364686.0 )

Ram's eff.= 4
Rahim's eff=2
Rachel's eff. = 1
total= 4+2+1 = 7
so 40/7=5(5/7)

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)


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