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If 40% of unsuccessful suicide attempts are repeated within 6 months and 25% of suicides are successful, what percentage of suicides in any 6 months period is the first attempt?

30 40 50 60 70

I keep getting 77. Out of 100 initial attempts, 75 un succ. Out of these 75, 40% are attempted again, or 30. Out of the these 30 attempts, 7.5 are successful. When they say suicides, they mean successful ones right? If so, there are 25 + 7.5 total, or 32.5. 25/32.5 = appr 77 %

I think I'm missing something. Can anyone show how to get the OA, 70? Thanks

Aren't 100% of suicides "successful" otherwise they'd be attempted suicides?

tamg08 wrote:

If 40% of unsuccessful suicide attempts are repeated within 6 months and 25% of suicides are successful, what percentage of suicides in any 6 months period is the first attempt?

30 40 50 60 70

I keep getting 77. Out of 100 initial attempts, 75 un succ. Out of these 75, 40% are attempted again, or 30. Out of the these 30 attempts, 7.5 are successful. When they say suicides, they mean successful ones right? If so, there are 25 + 7.5 total, or 32.5. 25/32.5 = appr 77 %

I think I'm missing something. Can anyone show how to get the OA, 70? Thanks

_________________

------------------------------------ J Allen Morris **I'm pretty sure I'm right, but then again, I'm just a guy with his head up his a$$.

If 40% of unsuccessful suicide attempts are repeated within 6 months and 25% of suicides are successful, what percentage of suicides in any 6 months period is the first attempt?

30 40 50 60 70

I keep getting 77. Out of 100 initial attempts, 75 un succ. Out of these 75, 40% are attempted again, or 30. Out of the these 30 attempts, 7.5 are successful. When they say suicides, they mean successful ones right? If so, there are 25 + 7.5 total, or 32.5. 25/32.5 = appr 77 %

I think I'm missing something. Can anyone show how to get the OA, 70? Thanks

Think in this way.. assume 100 sucide attemps.. 25 successful 75 unsuccessfull. 40% of unsuccessful suicide attempts are repeated =40% sucide attempts are second attempt = 30

% first atttempt = 100-30 =70%
_________________

Your attitude determines your altitude Smiling wins more friends than frowning

Think in this way.. assume 100 sucide attemps.. 25 successful 75 unsuccessfull. 40% of unsuccessful suicide attempts are repeated =40% sucide attempts are second attempt = 30

% first atttempt = 100-30 =70%

I don't agree with this method, since it assumes that out of the 25 successful attempts, none of them were re-attempts. It only considers the 75% unsuccessful, but for all we know, from the 25 successful attempts, a good portion of them may have been repeats.

Think in this way.. assume 100 sucide attemps.. 25 successful 75 unsuccessfull. 40% of unsuccessful suicide attempts are repeated =40% sucide attempts are second attempt = 30

% first atttempt = 100-30 =70%

I don't agree with this method, since it assumes that out of the 25 successful attempts, none of them were re-attempts. It only considers the 75% unsuccessful, but for all we know, from the 25 successful attempts, a good portion of them may have been repeats.

If 40% of unsuccessful suicide attempts are repeated within 6 months and 25% of suicides are successful, what percentage of suicides in any 6 months period is the first attempt?

30 40 50 60 70

I keep getting 77. Out of 100 initial attempts, 75 un succ. Out of these 75, 40% are attempted again, or 30. Out of the these 30 attempts, 7.5 are successful. When they say suicides, they mean successful ones right? If so, there are 25 + 7.5 total, or 32.5. 25/32.5 = appr 77 %

I think I'm missing something. Can anyone show how to get the OA, 70? Thanks

Probably any is not correct here. Any includes the first month in which all (100%) sucides are first attempt.
_________________

There is no initial month on this problem. Given that it asks for percentages, the word "any" is not relevant, as the percentage will be the same for any period.

The question does not ask "what percentage of attempted suicides in any 6 months period is a first attempt?".

It asks "what percentage of suicides in any 6 months period is a first attempt?".