Question

the teacher tell the class that the highest marks obtained by a student in her class is three times the lowest marks -7 is the highest marks are 86 find the lowest marks

Answer 1

let lowest marks be x
so by the question
3 times lowest marks that is x is subtracted by 7 to get 86 that is the highest mark
so
3x-7=86
3x=86+7
3x=93
x=93÷3
x=31

so lowest marks are 31