A book has 240 pages. Xiaoxue reads it for 5 days, and there are 85 pages left. How many pages do she read on average every day? (solution with equation)
一本书有240页，小雪看了5天，还剩85页，平均每天看多少页？(用方程解答)
<gadget id="calculator">240 - 85</gadget>
<output>155</output>

<gadget id="calculator">155 / 5</gadget>
<output>31</output>

<result>31</result>