# Difficult Maths in A level Biology watch

1. Attachment 696816Attachment 696830

Hi,
Can anyone help, I keep getting the wrong answer.
I added all the values divided by the time and then the mass.
Part (d)
0.975
3. (Original post by LittleBoxes)
0.975
It would help if we knew what the question was.
4. The table is the data
(Original post by Glassapple)
It would help if we knew what the question was.
5. (Original post by Glassapple)
It would help if we knew what the question was.

2d
6. I forgot to attach the question
7. You are not adding up the total of the syringe values, you are adding up the differences between them.

From minute 0 to minute 1, it used 0.03cm^3 of oxygen, minute 1 to minute 2 it's 0.02cm^3, etc. From there you should be able to find the answer as it's just a bit of multiplication and division to find the rate as defined in the question.
8. (Original post by Paulington)
You are not adding up the total of the syringe values, you are adding up the differences between them.

From minute 0 to minute 1, it used 0.03cm^3 of oxygen, minute 1 to minute 2 it's 0.02cm^3, etc. From there you should be able to find the answer as it's just a bit of multiplication and division to find the rate as defined in the question.
Thanks🙂

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