All Junior Cert Mathematics posts
• #### HELP DONT UNDERSTAND!!! Dunn

for the 2015 higher level maths paper 1 question 4 (b) i am completely lost on how to do it help would be greatly appreciated

1. #### SryanBruen

So you fill in the function of putting in "k" where there's an 'x' and instead of labelling y =, you instead label it as k = because in the question it says, "in terms of k"

2. #### granners

i remember doing that question last year in the exam and that question took me as long to do as the rest of the paper. i advise to go onto the 2015 marking scheme as theyll break down the question. i think the answer was something like 42000

3. #### SryanBruen

granners, he only said (b) which I explained how to do there ^

4. #### Dunn

i dont think thats the right question?

5. #### SryanBruen

Well you said 2015 HL paper 1 question 4 (b)

6. #### SryanBruen

Do you mean 2015 HL sample paper 1 question 4 (b)?

7. #### Dunn

the question im talking about is "Dermott calculates that after tax has been deducted his investment will be worth 5223.60 at the end of the second year. Calculate the rate of interest for the second year." the rate of interest for the 1st year is 3% and the second year will have a bigger one, tax of 41% will be deducted from the interest

8. #### Dunn

it could be sample paper i just went 2015 paper the first thing that came up for the questions

9. #### SryanBruen

Yeah that's the sample paper not the SEC paper (which you said first)

10. #### SryanBruen

And sorry I'm bad at Compound Interest

11. #### DarzoC

You need to have the original sum invested

12. #### fionanewsome

neither do I. Hope this helps:)..........