A and B together do a job in 12 days and A could do the job in 20 days if he worked alone. How many days would B take to do the job if he worked alone?1). 302). 253). 244). 15

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1.	A and B together do a job in 12 days and A could do the job in 20 days if he worked alone. How many days would B take to do the job if he worked alone?1). 302). 253). 244). 15
Answer» I am not SURE, MAY be 30 is CORRECT

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