It is known that the concentration of salt water in bottle A is 8%, the concentration of salt water in bottle B is 5%, and the concentration after mixing is 6.2%, then what is the concentration after mixing one-fourth of the salt water in bottle A and one-sixth of the salt water in bottle B
已知甲瓶盐水浓度为8%，乙瓶盐水浓度为5%，混合后浓度为6.2%，那么四分之一的甲瓶盐水与六分之一的乙瓶盐水混合后的浓度为多少
<gadget id="calculator">6.5 / 100</gadget>
<output>0.065</output>

<result>0.065</result>