The sum of the minuend, the subtrahend and the difference is 80, the ratio of the subtrahend and the difference is 3:2, what is the minuend.
被减数、减数与差的和是80，减数与差的比是3：2，被减数是多少．
<gadget id="calculator">80 / 2</gadget>
<output>40</output>

<result>40</result>