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Arthur Yardley

· started a discussion

· 1 Months ago

Assume total work = 15 units.
(a+b)15=15; a+b=1;
3.5a + 26.5b = 15
3.5(1-b) + 26.5b=15
23b=11.5
b=0.5;a=0.5
15/a=30 days

Question:
A and B can do a work in 15 days. If A alone works on it for 3.5 days and B completes remaining work in 26.5 days then A can alone complete the whole work in how many days?
Options:
A) 20 days
B) 25 days 
C) 30 days 
D) 40 days 
Solution:

Ans: (c)


Sumit Sharma

· commented

· 1 Months ago

thnx arthur

Aman kumar

· commented

· 1 Months ago

wrong

Mahesh Sandeboina

· commented

· 1 Months ago

thank you

ARVIND GEHLOt

· commented

· 1 Months ago

tq sir

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