Amit can complete a piece of work in 2.25 days. Badri takes double the time taken by amit. Chetan takes double that of badri and das takes double that of chetan to complete the same task. They are split into two groups (of one or more persons) such that the difference between the time taken by the two groups to complete the same work is minimum. What could be the composition of the faster group?
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amitnrw:
2.25 * 2 = 4.5 and not 5 and further formula used are not correct
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Answer:
A alone is fastest group
minimum difference = 0.32 days
Step-by-step explanation:
A-Amit B-Badri C-Chetan D-Das
A takes 2.25 days
B takes 2.25* 2 = 4.5 days
C takes 4.5*2 = 9 days
D takes 9*2 = 18 Days
Make a group of B , C & D together & A lone in one group'
1/ (1/4.5 + 1/9 + 1/18) = 18/(4 +2 + 1) = 18/7 = 2.57 Days
A alone is fastest group
Difference = 2.57 - 2.25 = 0.32 days
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