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.
plz tell the answer asap​

Answer 1

Let lowest marks = x

given that -

highest marks = twice the lower mark + 7

Highest marks = 2x + 7

Also,

Highest marks = 87

thus,

2x + 7 = 87

2x = 87 - 7

2x = 80

x = 80 / 2

x = 40

therefore lowest marks = 40

thank me if possible ✌️

Answer 2

Answer:

$2x - lowest marks + 7 = 87 \\ 2x - x + 7 = 87 \\ x + 7 = 87 \\ x = 87 - 7 = 80 \\ 2xof80 = 40$

So 2×40+7=87

Therefore 40 is the answer.