Question

The teacher tells the class that the highest marks obtained by a student in her class is twice the lowest marks plus 7. The highest score is 87. What is the lowest score

Answer 1

let lowest mark be X
2x + 7 =87
2x= 87-7
X=80/2
X= 40
sol lowest mark is 40

Answer 2

Answer: 40

Step-by-step explanation: let the lowest marks be x

Then,

          2x+7 = 87

           2x    = 87 - 7

           x      = 80/2

           x      = 40