There are 5 questions in a certain exam. The statistics of the test results are as follows: 80% of the total number of people got the first question right, 95% of the total number got the second question right, and 95% of the total number got the third question right. 85% of the number of people, 79% of the total number of people got the fourth question right, and 74% of the total number of people got the fifth question right. What is the minimum pass rate for the exam?
某次考试共有5道题，考试结果统计如下：做对第一道题的占总人数的80%，做对第二道题的占总人数的95%，做对第三道题的占总人数的85%，做对第四道题的占总人数的79%，做对第五道题的占总人数的74%，如果做对三道以上(包括三道)题目为及格，那么这次考试的及格率至少是百分之几？
<gadget id="calculator">5 * 100</gadget>
<output>500</output>

<gadget id="calculator">80 + 95 + 85 + 79 + 74</gadget>
<output>413</output>

<gadget id="calculator">500 - 413</gadget>
<output>87</output>

<gadget id="calculator">87 / 3</gadget>
<output>29</output>

<gadget id="calculator">100 - 29</gadget>
<output>71</output>

<gadget id="calculator">71 / 100</gadget>
<output>71/100 = around 0.71</output>

<result>71/100 = around 0.71</result>