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The answer to question 26 of comprehensive examination paper B in the second volume of seventh grade mathematics classroom.
A: 2 1 When students travel, the fees charged by the two travel agencies are equal.
(2)
When x=45, 0.8x=0.8×45=36.
0.7(x+3)=0.7×(45+3)=33.6
36﹥33.6
B travel agency is very cheap.
A:
There are 45 students in this class, so it is more appropriate to choose B Travel Agency.