Question

the teacher tells the class that the highest marks obtained by a student in maths class test is twice the lowest marks plus 5. if the highest marks is 85, find the lowest marks.​

Answer 1

Answer: 44.5

Step-by-step explanation:

Assume highest marks as h and lowest as L.

h = twice L + 5

h = 2 x L + 5

h = 85 as given

L = 85 divided by 2 - 5

L = 45.5 - 5

L = 44.5

Answer 2

Step-by-step explanation:

Let the lowest mark be x.

The highest marks is 85.

The highest marks is twice the lowest marks plus 5 = 2x + 5 = 85

A.T.Q;

2x + 5 = 85

or, 2x = 85 - 5

or, 2x = 80

or, x = 80/2

Therefore, x = 40

Thus, the lowest marks is 40.

Hope it will help you.