Question

The teacher tells the class that the highest marks obtained by a student in her class is three times the lowest marks minus seven.If the highest marks are 86 , find the lowest marks.

Answer 1

Answer:

Step-by-step explanation:

Given, the highest marks are 86.

Let the lowest marks be x .

Then, it is given that the highest marks are three times the lowest marks minus seven .

So, the equation will be

86=3x-7

On transposing we get,

86+7=3x

93=3x

x = 93/3

x = 31

Therefore, the lowest marks in the class are 31.

Answer 2

Answer:

x = 31

Step-by-step explanation:

Given, the highest marks are 86.  

Let the lowest marks be x.

Then, it is given that the highest marks are three times the lowest marks minus seven.  

So, the equation will be

86=3x-7

On transposing we get,

86+7=3x

93=3x

x = 93/3

x = 31  

Therefore, the lowest marks in the class are 31.