A can do a work in 6 days , B can do a work in 8 days and C can do it in 12 days. B left work after 6 days. For how many number of days should A and C should work together to complete the remaining work ?  Choices:
A) 1  B) 2  C) 3  D) 4  E) 5
b work 1/8 * 6=3/4   remaining work =1-3/4=1/4   a and c work together =1/6+1/12=3/12=1/4   take reciprocial 4 * remaining work =4 *1/4= 
<gadget id="calculator">4 *1/4</gadget>
<output>1</output>
1   1NSWER:1
<result>A</result>
A can do a work in 6 days , B can do a work in 8 days and C can do it in 12 days. B left work after 6 days. For how many number of days should A and C should work together to complete the remaining work ?