Uncle Zhang’s family used 20 tons of water in July, 6 tons more than in June. How much was saved in June compared to July?
张大爷家七月份用水20吨，比六月份多用6吨，六月份比七月份节约了多少
<gadget id="calculator">6 / 20</gadget>
<output>3/10 = around 0.3</output>

<result>3/10 = around 0.3</result>