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On the occasion of state-level 'International Yoga Day', Gujarat's Surat city created a Guinness World Record for the largest number of people gathering for a yoga session at one place. More than one lakh people took part in this program. PM Modi has congratulated the city of Surat on this achievement.
A can do a work in 12 days and B in 16 days. If they work on it together for 3 days then in how many days the remaining work will be completed by B?