Problem: positive integer y is 50 percent of 50 percent of positive integer x , and y percent of x equals 9 . what is the value of x ?
Rationale: "y = 0.5 * 0.5 * x = x / 4 y % * x = 9 ( y / 100 ) * x = 9 ( x / 400 ) * x = 9 x ^ 2 = 9 * 400 x = 60 the answer is b ."
annotated_formula: multiply(multiply(divide(50, 9), divide(50, 9)), const_1000)