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. (Take the lowest
score to be l)​

Answer 1

Answer:

let the highest mark b x and lowest mark be y then the equation will be

x = 2 Y + 7

87=2y+7.

87-7=2y

80=2y.

y=80/2

y=40..marks