A is 60% more efficient than B. If A takes 9 days less than B to do a certain piece of work, then find the number of days it would take them to complete the same work, if both work together.
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A is 60% more efficient than B. If A takes 9 days less than B to do a certain piece of work, then find the number of days it would take them to complete the same work, if both work together.