120 students represent x percent of the boys at a school . if the boys at the school make up 30 % of the total school population of x students , what is x ?
"let b be the number of boys in the school . 120 = xb / 100 b = 0.3 x 12000 = 0.3 x ^ 2 x ^ 2 = 40000 x = 200 the answer is d ."
sqrt(divide(multiply(120, const_100), divide(30, const_100)))