Question

A teacher tells that highest marks obtained by a student in her class is twice the lowest marks.​

Answer 1

Answer:

40

Step-by-step explanation:

Let's assume the lowest mark is ′x′.

twice the lowest mark will be 2x

given that twice the lowest marks plus seven is highest mark.

=> 2x+7=87

=>2x=80

=>x=40

Hence the lowestmark is 40.

Answer 2

Answer:

correct option is A 40

let's assume the lowest mark is "x"

twice the lowest mark will be 2x

given that twice the lowest marks plus seven is highest marks

2x+7=87

2x=80

x= 40

hence the lowest mark is =40

Step-by-step explanation:

hope you understand the answer well