A farm planted 150 hectares of corn this year, and the area of soybeans is 90 hectares less than that of corn. What percentage of the area of soybeans is that of corn?
某农场今年种玉米150公顷，种大豆的面积比玉米少90公顷，种大豆面积是玉米的百分之几？
<gadget id="calculator">150 - 90</gadget>
<output>60</output>

<gadget id="calculator">60 / 150</gadget>
<output>2/5 = around 0.4</output>

<result>2/5 = around 0.4</result>