Each male tie is 20 yuan, and each female corsage is 10 yuan. The ratio of the number of neckties and corsages purchased in a certain store is 3:2, and the total value is 4,000 yuan. How many ties did you buy?
每条男领带20元，每支女胸花10元，某个体商店买进领带与胸花件数的比是3：2，共值4000元．买进领带多少件？
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">(2/3) * 10</gadget>
<output>20/3 = around 6.666667</output>

<gadget id="calculator">20 + (20/3)</gadget>
<output>80/3 = around 26.666667</output>

<gadget id="calculator">4_000 / (80/3)</gadget>
<output>150</output>

<result>150</result>