A desk is 10 yuan more expensive than a chair. If the unit price of the chair is 60% of the desk, how much will it cost to buy a set of such desks and chairs?
一张课桌比一把椅子贵10元，如果椅子的单价是课桌的60%，买一套这样的桌椅一共要多少元？
<gadget id="calculator">10 / 0.4</gadget>
<output>25</output>

<gadget id="calculator">60 / 100</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">(3/5) * 25</gadget>
<output>15</output>

<gadget id="calculator">25 + 15</gadget>
<output>40</output>

<result>40</result>