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# C2 Geometric Series watch

1. It's an emergency! Anyone that can solve ex 13+14 of mixed exercise of chapter 7 C2 book please?! P.S. Merry Christmas!
2. https://0e90d90be05fe2865012661b731d...apter%2007.pdf for those who don't have a book! I just don't know how it has been solved!
3. (Original post by DemetraK)
It's an emergency! Anyone that can solve ex 13+14 of mixed exercise of chapter 7 C2 book please?! P.S. Merry Christmas!

you will need to post a photo of the page

you will get faster response if you post in the main maths section (forum 38)
4. I am new so how can I do this?
5. Think with pics for q13 &remember to convert units, q14 is perhaps a little harder but isn't that bad..

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6. That's ex13! x Still have a problem in b
Attached Images

7. (Original post by DemetraK)
I am new so how can I do this?
scan or take a photo

8. (Original post by DemetraK)
That's ex13! x Still have a problem in b
this is from P1 June 1998 paper
9. And that's ex14..
Attached Images

10. Any tips on how to solve 13b and 14a?
11. (Original post by DemetraK)
That's ex13! x Still have a problem in b
it is against the rules to post full solutions so I attached a hint to help you

I will be off line soon so I am advising you to repost in the MATHS HELP forum (not maths exams)
12. (Original post by DemetraK)
And that's ex14..
15% reduction is 0.85
common ration 0.85
13. The only thing I did not understand is why you are multiplying by 5 :/
14. I got it for ex 14 ! Thanks for your help!
15. (Original post by DemetraK)
The only thing I did not understand is why you are multiplying by 5 :/
5/60 5 minutes out 60 minutes to convert into hours

use the quote button because I am not in your room so I cannot tell if you are replying to me or someone else
16. (Original post by TeeEm)
5/60 5 minutes out 60 minutes to convert into hours

use the quote button because I am not in your room so I cannot tell if you are replying to me or someone else
I was doing it with a different way, like
16th: 6(1.2)
17th:6(1.2)^2 and so on... so that's why I am having trouble with 5
17. (Original post by DemetraK)
I was doing it with a different way, like
16th: 6(1.2)
17th:6(1.2)^2 and so on... so that's why I am having trouble with 5
first part

75 minutes to cover 15 Km

so the pace is 5 minutes every km
so time increases by 20%

5 x 1.2 (minutes) for the the 16th km
(5 x 1.2)/60 (hours) for the the 16th km

and so on
18. (Original post by TeeEm)
first part

75 minutes to cover 15 Km

so the pace is 5 minutes every km
so time increases by 20%

5 x 1.2 (minutes) for the the 16th km
(5 x 1.2)/60 (hours) for the the 16th km

and so on
OHH! I thought it was like ... Okay whatever! haha! Thanks so much!
19. (Original post by DemetraK)
OHH! I thought it was like ... Okay whatever! haha! Thanks so much!
my pleasure

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