A and B complete a work in 3 days. A alone can do it in 9 days. If both together can do the work in how many days?	Answers:	A) 3.75 days	B) 3.99 days	C) 2.99 days	D) 2.98 days	E) 2.25 days
1/3 + 1/9 = 4/9   9/4= 
<gadget id="calculator">9/4</gadget>
<output>9/4 = around 2.25</output>
2.25 days   Answer: 2.25 days
<result>E</result>
A and B complete a work in 3 days. A alone can do it in 9 days. If both together can do the work in how many days?