24.the marked price of a television is set at a profit of20%. then it is sold at a discount of20%and the loss is $64 .find the cost price of the television.
27.a merchant bought a chair and a table for $200 and $500 respectively. then he sold the chair at a loss of 40%and the table at a profit of 40%. find the overal profit /loss and the overall profit /loss percent .
f.1 maths,淨係識一題都得
2007-02-02 5:37 am
回答 (3)
2007-02-02 5:53 am
✔ 最佳答案
24) 0.8(1.2x)=x-64x=$1600
27) [0.6)(200)+(1.4)(500)]-(200+500)
=PROFIT $120
(120/700)100%
=17.1%
2007-02-02 5:54 am
樓上 的答案應該更正係 profit 17%
2007-02-02 5:46 am
24: IF the cost price of the television is X dollars
X(1+20%)(1-20%)=x-64
27:
200(1-40%)+500(1+40%)
=200(0.6)+500(1.4)
=120+700
=$820
820-700/700 * 100%
= loss 17 %
2007-02-01 21:50:53 補充：
sorry...i have so wrong24:X(1 20%)(1-20%)=64
2007-02-01 21:51:27 補充：
so=some
X(1+20%)(1-20%)=x-64
27:
200(1-40%)+500(1+40%)
=200(0.6)+500(1.4)
=120+700
=$820
820-700/700 * 100%
= loss 17 %
2007-02-01 21:50:53 補充：
sorry...i have so wrong24:X(1 20%)(1-20%)=64
2007-02-01 21:51:27 補充：
so=some
收錄日期: 2021-04-13 13:26:12
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20070201000051KK03981