A, B, C alone can construct a house in 15, 30 and 20 days respectively. All together start the work, after 4 days they have some misunderstanding and they start working alternatively starting with A. How many days are required to complete the construction of the house?
A) 12 days
B) 11 days
C) 15 days
D) 17 days
Answers
Answered by
2
the answer is 12 days ...
please mark me as the brainest....
Similar questions