Employees traveling, no more than 25 people, the per capita cost of 1 yuan, more than 25 people, one more person, the per capita cost of 2 yuan, the per capita is not low in 7 yuan, how many people pa

Employees traveling, no more than 25 people, the per capita cost of 1 yuan, more than 25 people, one more person, the per capita cost of 2 yuan, the per capita is not low in 7 yuan, how many people pay 27 yuan? 27=(25+x)(1-2x)

x^2-5x+1=

(x-2)(x-5)=

x1=2 1-2*2< 7

x2=5 1-2*5> 7

25+x=25+5=3

*** There are 3 people.