1. rico thinks of a number between 30 and 40 that is represented by x. • this number, x, is 3_ 4 of another number, which is represented by y. • the number represented by y equals 1_ 3 of another number, which is represented by z. • the number represented by z is a number from 140 to 151. • the numbers represented by x, y, and z are whole numbers.