Hi,

Q.2 You took the perimeter of a rectangle of length and width to be but it is . When you got a width of from this the length should have been 1.75 times this — 28. This answer wasn’t there so you you just halved the 16. You should have solved for and then the answer was . [-4 total]

Q.5 You were correct down to

(*)

but then you got

(**)

How do you go from (*) to (**)? [-8 total]

Q.6 A similar mistake. You have

but then said that … … perhaps you are looking at the answers too much. [-12 total]

Q.8 You didn’t read the question properly, it isn’t

, it is

. [-16 total]

That is three questions where the minus is causing you issues.

Q. 11 You are correct down to

.

How do you get from there to:

? [-20.5 total]

Q.12 You got four marks out of six but because you didn’t really use algebra you couldn’t rule out another solution. Your big problem here was failing to define your variables, e.g.

# managers and #assistants.

You have the correct

,

but failed to use the fact that there are 25 workers in the office to form:

. [-22.5 total]

Q.12 You formed the quadratic equation

but never went anywhere with it. [-27.5 total]

Regards,

J.P.