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| Thread ID: 50661 | 2004-10-28 06:23:00 | Maths Revision | Gum Digger (5187) | Press F1 |
| Post ID | Timestamp | Content | User | ||
| 285514 | 2004-10-29 11:20:00 | I think this is a trick question, why would you pay back two lones for one car. So ignore option two and work with the easy option 1. 45*24=1080 which is 70% of the total. My workings from here might not be what you guys are learning but they satisfy me, so here goes: 1080/7=154.286 this is 10% of the total cost. 154.286*10=1542.86 this should be 100%. My answer would be $1542.86 |
Rob99 (151) | ||
| 285515 | 2004-10-29 11:26:00 | > I think this is a trick question, why would you pay > back two lones for one car. > So ignore option two and work with the easy option panic!! You can't do this! > 1. > 45*24=1080 which is 70% of the total. [b]It's not, you have to remember the $2992 lump sum he paid to the dealer > My workings from here might not be what you guys are > learning but they satisfy me, so here goes: > 1080/7=154.286 this is 10% of the total cost. > 154.286*10=1542.86 this should be 100%. why do you do it this way? You can save time and use 0.7: 1080/0.7 = 100% total cost. But anyway, this answer is wrong. > > My answer would be $1542.86 It might be, but what happened to the rest of the problem? No offense intended, but you are missing a fairly vital part. |
Bletch (244) | ||
| 285516 | 2004-10-29 11:27:00 | sorry about the bold text, I forgot to turn it off. | Bletch (244) | ||
| 285517 | 2004-10-29 11:32:00 | Or if I had to consider option 2 as well my answer would be: $4966.67 | Rob99 (151) | ||
| 285518 | 2004-10-29 11:33:00 | how did you get this? Can you show some steps? | Bletch (244) | ||
| 285519 | 2004-10-29 11:34:00 | >panic!! You can't do this! I can do what I like, even get it wrong if I wish. |
Rob99 (151) | ||
| 285520 | 2004-10-29 11:38:00 | Fair enough, my bad. What I meant was that according to the generally accepted rules of mathematics, you cannot usually disregard conditions and still obtain a correct answer. | Bletch (244) | ||
| 285521 | 2004-10-29 11:41:00 | I should have writen it down but: $2992-10.5%=2677.84 2677.84-10.5%=2396.6668 2396.6668+1080=3476.6668 3476.6668/7=496.6666........ 496.6666........*10=$4966.67 |
Rob99 (151) | ||
| 285522 | 2004-10-29 11:45:00 | $2992-10.5%=2677.84 2677.84-10.5%=2396.6668 2396.6668+1080=3476.6 668 3476.6668/7=496.6666........ 496.6666........*10=$4966.67 woops I forgot the 1080 bit so: 4966.67+1080=$6046.67 |
Rob99 (151) | ||
| 285523 | 2004-10-29 11:48:00 | OK, I think I understand your problem. When you are using your calculator, are you pressing: "2 9 9 2 - 1 0 . 5 %"? You can's do this on a normal calculator, the % button does other wierd things. What you need to do is "2 9 9 2 / 1 . 1 0 5". This should give you 2707.69 after removing the interest for the first time. I am going to bed now, will check this thread after lunch tomorrow afternoon. Bletch |
Bletch (244) | ||
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