The work efficiency of A and B is 3:4, A and B cooperate with a batch of parts, B does not make half of it for some reason, and A completes the rest. The workload ratio of A and B is 11:10, then A and B work What is the ratio of the total.
甲与乙的工作效率是3：4，甲乙合作一批零件，乙因故而做到一半时不做，剩下的由甲完成，甲与乙的工作量比是11：10，则甲与工作总量的比是多少．
<gadget id="calculator">11 + 10</gadget>
<output>21</output>

<gadget id="calculator">11 / 21</gadget>
<output>11/21 = around 0.52381</output>

<result>11/21 = around 0.52381</result>