In the construction of a new socialist countryside, a construction company undertakes the road hardening project in Dashadi Village. It takes 15 days for the construction team A to do it alone, and 10 days for the construction team B to do it alone. After 5 days of joint repair by teams A and B, due to an ice disaster elsewhere, the road was destroyed, and the company needs to dispatch an engineering team to participate in the rush repair battle. Which engineering team do you think will be dispatched? Give reasons. How many days will it take for the remaining engineering team to complete the project?
在社会主义新农村建设中，某建筑公司承担大沙地村公路硬化工程，甲工程队单独做需要15天，乙工程队单独做需要10天．甲、乙两队合修5天后，因其它地方发生冰灾，道路被毁，公司需抽调一个工程队参加抢修会战，你认为会抽调哪个工程队？说出理由．留下的工程队还需几天才能把这项工程做完？
<gadget id="calculator">1 / 10</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">(1/10) * 5</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">1 / 15</gadget>
<output>1/15 = around 0.066667</output>

<gadget id="calculator">(1/15) * 5</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">(1/2) + (1/3)</gadget>
<output>5/6 = around 0.833333</output>

<gadget id="calculator">1 - (5/6)</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">(1/6) / (1/15)</gadget>
<output>5/2 = around 2.5</output>

<result>5/2 = around 2.5</result>