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abhishek pujari

· started a discussion

· 1 Months ago

error (Question: 207556.0 )

while taking LCM method we always take the first unit like 60 if no of working days are 10, 12, and 15. how could you select 120 instead of 60.

Question:
A and B can do a piece of work in 10 days; B and C in 15 days; C and A in 20 days. All of them work at it for 2 days, then A leaves. After 2 days of this, B also leaves. C will complete the rest in –
Options:
A) 78 days
B) 88 days
C) 58 days
D) 68 days
Solution:
Ans: (a)


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