The selling price of a certain apple is x yuan per kilogram. If you buy 5 kilograms with RMB with a face value of 100 yuan, how much yuan should you get back?
某种苹果的售价是每千克x元，用面值是100元的人民币购买了5千克，应找回多少元．
<gadget id="calculator">100 - 5</gadget>
<output>95</output>

<result>95</result>