The Young Pioneers participate in the tree planting work, and each person plants 2 trees. If one person digs a tree pit, it takes 25 minutes, and it takes 20 minutes to transport the saplings (up to 4 trees). 10 minutes, it takes 10 minutes to plant a tree. Now working in groups of two, what is the shortest time required to complete the tree planting task?
少先队员参加植树劳动，每人植树2棵，如果一个人挖一个树坑要25分钟，运树苗一趟(最多可运4棵)需要20分钟，提一桶水(可以浇4棵树)需要10分钟，栽好一棵树要10分钟．现在以两个人一组进行合作，完成植树任务所需的最短时间是多少分？
<gadget id="calculator">25 * 3</gadget>
<output>75</output>

<gadget id="calculator">75 + 10</gadget>
<output>85</output>

<result>85</result>