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To get target we need to know both amy & stacy rates..
#1
Rate of stacy is not known insufficient

#2
No relation between stacy and amy ij values
Insufficient
From 1&2
We cannot get target value
Option E
Bunuel
­In how much time will Amy and Stacy complete a particular task, if they work together at their respective constant rate?

(1) Amy, working at a constant rate, can complete the task in 15 days.
(2) Stacy works less efficiently than Amy



­­­

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