A, B, and C are three people. A and B weigh 55 kilograms in total, and B and C weigh 75 kilograms in total. Among them, B accounts for (3/10) the total weight of the three people. How many kilograms do the three people weigh together?
甲、乙、丙三人，甲、乙共重55千克，乙、丙共重75千克，其中乙占这三人总体重的(3/10)，这三人共重多少千克？
<gadget id="calculator">55 + 75</gadget>
<output>130</output>

<gadget id="calculator">3 / 10</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">1 + (3/10)</gadget>
<output>13/10 = around 1.3</output>

<gadget id="calculator">130 / (13/10)</gadget>
<output>100</output>

<result>100</result>