The sum of A, B, and C is 2, the sum of A and C is 160%, the sum of B and C is 140%, what is C?
甲、乙、丙三个数的和是2，甲数、丙数的和是160%，乙数、丙数的和是140%，丙数是多少？
<gadget id="calculator">160 / 100</gadget>
<output>8/5 = around 1.6</output>

<gadget id="calculator">140 / 100</gadget>
<output>7/5 = around 1.4</output>

<gadget id="calculator">(7/5) - 2</gadget>
<output>-3/5 = around -0.6</output>

<gadget id="calculator">(8/5) + (-3/5)</gadget>
<output>1</output>

<result>1</result>