A and B each bring a bundle of telephone wires to install a telephone for the user. A uses up half of the bundle, leaving 70 meters; How much rice did B bring?
甲、乙二人各带一捆电话线去给用户安装电话，甲用去一捆的一半，还剩70米；乙用去一半后，剩下的比甲原来的少10米．求乙带了多少米？
<gadget id="calculator">70 * 2</gadget>
<output>140</output>

<gadget id="calculator">140 - 10</gadget>
<output>130</output>

<gadget id="calculator">130 * 2</gadget>
<output>260</output>

<result>260</result>