1 Which of the following occurred during Porfirio Diaz's reign
as Mexico's President?
A
A war between the U. S. and Mexico
B
An increase in U. S. investment in Mexico
С
Substantial reform of the hacienda system
D
The writing of a new constitution

The correct answer is connotation.

If 1/5 of the students are in the football team and the class has 40 students, you need to multiple this numbers to know the exact number of students that form the team.40 x 1/5 = 8 studentsif 4 more students join: 8+4= 12 studentsto know the %: 40 students are equivalent to the whole class (100%). then 12 students are how much %? 40 students  = 100%12 students  =    x  %x= 30% of students are in the team.