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Shashank started a work and left after 12 days, rest work done by Nitish in 15 days. Had Shashank left work, 2 days before, the rest work could have been done by Nitish in 18 days. If Shashank reduces his efficiency by 20% and Nitish increase his efficiency by 50%. Then in how many day working together they will finish the work? |
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