The school used 36 tons of water in October, saving 25% compared to September, and saving 10% compared to August. How many tons of water was used in September?
学校十月份用水36吨，比九月份节约25%，比八月份节约10%，九月份用水多少吨？
<gadget id="calculator">25 / 100</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 - (1/4)</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">36 / (3/4)</gadget>
<output>48</output>

<result>48</result>