Brazen can paint a wall red in 12 days, while Ballary can paint the entire wall in 21 days. If Brazen and Ballari work alternately for one hour each from painting the wall to coloring it red, then how many hours will it take to paint the entire wall red?

Brazen can paint a wall red in 12 days, while Ballary can paint the en

1.	Brazen can paint a wall red in 12 days, while Ballary can paint the entire wall in 21 days. If Brazen and Ballari work alternately for one hour each from painting the wall to coloring it red, then how many hours will it take to paint the entire wall red?
A.	16 days
B.	15 days
C.	14 days
D.	12 days
Answer» C. 14 days

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Brazen can paint a wall red in 12 days, while Ballary can paint the entire wall in 21 days. If Brazen and Ballari work alternately for one hour each from painting the wall to coloring it red, then how many hours will it take to paint the entire wall red?

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