## anonymous 5 years ago Ok.....here is another..arman, where ya at? lol :) An investment of 40,000 was made by a business club. The investment was split into three parts and lasted for one year. The first part of the investment earned 8% interest, the second 6%, and the third 9%. Total interest from the investments was 3060. The interest from the first investment was 2 times the interest from the second. Find the amounts of the three parts of the investment.

1. anonymous

i = prt

2. anonymous

3. anonymous

Omg... give me a sec

4. anonymous

LOL!

5. anonymous

R U sure the next to last sentence is accurate?

6. anonymous

hmmm lemme c

7. anonymous

The interstate formula doesn't do anything, the interstate values are totals

8. anonymous

Yes it's right. @ Arman....what?!

9. anonymous

This problem is a owletgit lolol

10. anonymous

Yeah, I know it's tough~

11. anonymous

I think it is stated incorrectly. The next to last statement should be about the amounts. 3060 = .08(2x) + .06(x) + .09(40000 - 3x)

12. anonymous

lemme c

13. anonymous

306000 = 8(2x) + 6(x) + 9(40000 - 3x) 306000 = 16x + 6x + 360000 - 27x 306000 = -5x + 360000 5x = 54000 x = 10500

14. anonymous

8% = $21000 6% =$10500 9% = \$8500

15. anonymous

nope. that's what it says.....

16. anonymous

do the first part is 21000?

17. anonymous

*so

18. anonymous

A is 3889.83, b is 2593.22 and c is 33516.95... the values are not 100% precise because a endless rationale was involved

19. anonymous

but the total was only like 3060.

20. anonymous

Total is 40k

21. anonymous

interest i mean

22. anonymous

I see what I did wrong. Tommy another sec

23. anonymous

let x, y and z be the 1st, 2nd and the 3rd investments respectively. according to the given informations, we have the following three equations; $x+y+z=40,000 \rightarrow(1)$ $0.08x+0.06y+0.09z=3060 \rightarrow(2)$ $0.08x=2(0.06y) \rightarrow(3)$

24. anonymous

.......

25. anonymous

solving three equations, we get that: first investment x=18,000 second investment y=12,000 third investment z=10,000

26. anonymous

the three*

27. anonymous

is something wrong?

28. anonymous

I don't know if that makes any sense to you. do you have the final answer anyway?

29. anonymous

Lol, ok. lemme c.

30. anonymous

Oh my gosh.........it's right!

31. anonymous

A is 20193.66 b is 6731.28 c is 13025.06

32. anonymous

Actually the 18,12, and 10 was right!

33. anonymous

^^ I knew it was right :P .. I was just asking if it makes sense to you? lol

34. anonymous

35. anonymous

I got a problem for kelly: there is a integer, x, that is 10 digits long that if entered telephonically goes to you. What is x?

36. anonymous

lol.. this is a hard one for her :P

37. anonymous

arman, if you told me earlie, I would have sent you the answer and let you post it.. ;)

38. anonymous

anyway guys, it's my bed time already.. don't forget to click "become a fan", next to my name.. I hope you get the right answer arman!

39. anonymous

come on!

40. anonymous

I don't do "problems"!

41. anonymous

...........obviously.......lol. sigh.

42. anonymous

A telephone!

43. anonymous

A telephone... that's no number! And think of it this way, you can ask me all the math problems you want ;)

44. anonymous

lol...silly,

45. anonymous

you know you blew that last one! ;)

46. anonymous

Haha i think I'm a bit young anyways :P

47. anonymous

That was a bs question though -.-

48. anonymous

How is that?

49. anonymous

Cause nobody would several need to do a problem like that -.- and you knew the answer

50. anonymous

?

51. anonymous

"?"?

52. anonymous

Cause nobody would several need to do a problem like that -.- and you knew the answer

53. anonymous

whats that mean?

54. anonymous

Well you knew the answers lol and there is no real life problem where you know a total investment and interstate without knowing the values but you somehow know that one interstate is double the other? It's a useless trivia question... no offense :)

55. anonymous

I didn't know the answer. Trust me! That other guy knew it.

56. anonymous

Subjugation whateverrrr its still trivially useless :P

57. anonymous

Ahhhhhh* not Subjugation... stupid autospellcheck

58. anonymous

No I have to go grab a dictionary!

59. anonymous

Lol

60. anonymous

to make submissive or subservient; enslave.....what the hell?

61. anonymous

eh,

62. anonymous

What I don't get is why do you have all these words problems?

63. anonymous

math homework, duh!

64. anonymous

Would you prefer I give you regular problems?

65. anonymous

guess not...

66. anonymous

Lol whatsup grade are you in? And id love to help but I think the others got you covered-i have to put my brain to my work, I can chat though

67. anonymous

What... Damn spellcheck

68. anonymous

Or not...