128 students represent x percent of the boys at a school. If the boys at the school make up 50% of the total school population of x students, what is x?	Choose the correct choice from the following options: A) 160 B) 190 C) 225 D) 250 E) 500
Let B be the number of boys in the school.   128 = xB/100   B = 0.5x   12800=0.5x^2   x^2 = 25600   x = 160   The answer is 160.
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128 students represent x percent of the boys at a school. If the boys at the school make up 50% of the total school population of x students, what is x?