The bookstore's sales in the first quarter were 150,000 yuan, and the sales in the second quarter increased by 15,000 yuan compared with the first quarter. By what percentage did the sales in the second quarter increase compared with the first quarter?
书店第一季度的销售额为15万元，第二季度的销售额比第一季度增长了1.5万元，第二季度的销售额比第一季度增长了百分之几？
<gadget id="calculator">1.5 / 50</gadget>
<output>0.03</output>

<result>0.03</result>