What is the error made by the student?

It is A add the wrong number

Step-by-step explanation:

They added 4x to 4 instead of adding 2 to 4 and then dividing 4.

distance covered by pamela in 9 l of fuel = 99km

let us apply unitary method here.

distance covered by pamela in 1 l of fuel =99/9 =11 km

now let us find distance covered by pamela if she has 12 l of fuel.

distance covered in 12 l = distance covered in 1 l of fuel * 12

we know that distance covered by here in 1 l is 11 km.

so distance covered in 12 l of fuel = 11*12 = 132 km.

the correct answer is x/3+10≥32

hope this !