A and B can do a piece of work in 6 2/3 days and 5 days respectively. They work together for 2 days and then A leaves. In how many days after that B will complete the work alone.  Answers:
A) 1 ½ days	B) 2 ½ days	C) 3 ½ days	D) 4 ½ days	E) 5 ½ days
1 ½ days   1 ½ days   3/20 * 2 + (2 + x)/5 = 1   x = 1 ½ days
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A and B can do a piece of work in 6 2/3 days and 5 days respectively. They work together for 2 days and then A leaves. In how many days after that B will complete the work alone.