Suppose 35% of students in a class have blue eyes. Five blue-eyed students join the class. Now 48% of the students have blue eyes. How many students were originally in the class?

x :      35

x +5 : 48

35x+175=48x

175= 48x-35x

13x=175

x=175/13

x=13 students

the expression (1.26)2t reveals the approximate rate of increases in the number of plants semiannually.

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