Changxin Primary School used 190 tons of water in the second half of the year, saving 5% compared to the first half of the year. How many tons of water was used in the first half of the year? (solution with equation)
长新小学下半年用水190吨，比上半年节约5%．上半年用水多少吨？(用方程解答)
<gadget id="calculator">190 / 0.95</gadget>
<output>200</output>

<result>200</result>