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How! ! ! ! Smelly math problem! ! ! ! !
1, the hourly wage of Party A working alone is112, that of Party B is 1/9, and that of cooperation is112+/kloc-.

2, 3 hours of cooperation is 7/ 12, leaving 5/ 12, 5/12 ÷112 = 5. The answer is five hours.

After 3.6 hours, two-thirds of B's cultivation was completed, leaving 1/3,1/3 ÷112 = 4. The answer is four hours.

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