There is a batch of cement that can be transported 40 tons per day, which can be finished in 14.5 days. If you transport 10 tons more per day, how many days can you finish the shipment in advance?
有一批水泥，每天运40吨，14.5天可以运完．如果每天多运10吨，可以提前几天运完？
<gadget id="calculator">40 + 10</gadget>
<output>50</output>

<gadget id="calculator">14.5 / 50</gadget>
<output>0.29</output>

<gadget id="calculator">40 * 0.29</gadget>
<output>11.6</output>

<gadget id="calculator">14.5 - 11.6</gadget>
<output>2.9</output>

<result>2.9</result>