Please help me - thankyou :)
i have received this question twice now. I now 1 is not the answer, i don't think 600 is the answer, so is it 6, or 1000?
i filled in 6, but i am not sure if that is the answer.

Please help me thankyou i have received this question twice now I now 1 is not the answer i dont think 600 is the answer so is it 6 or 1000 i filled in 6 but i class=