Question

the teacher tells the class that the highest marks obtained by a student in a class is twice the lowest marks + 7 the highest score is 87 what is the lowest score

Answer 1

let lowest mark be x
highest mark = 2 x+7
87= 2 x+7
87-7= 2 x
80=2 x
80/2 = x
40 = x
lowest mark = 40