1. The price of a flat was $1 800 000 last year, it is $1 998 000 this year. Find the percentage change of the price of the flat.
2. The marled price of a MP3 player is $888 and the player sold at a 15% discount. Find the discount.
3. A pair of shoes is sold at a discount of 20% and its selling price is $440. Find its marked price.
呢幾條題來自Train Up MATHEMATICS 1 (S.1-S.2)
maths 英文題 之 百分數
2007-07-27 12:13 am
回答 (3)
2007-07-27 1:05 am
✔ 最佳答案
1. ($1998000-$1800000)/$1800000 x 100%=0.11 x 100%
=11%
Therefore the percentage change is increased 11%
2. $888 x 15%
=$888 x 0.15
=$133.2
Therefore the discount is $133.2
3. $440/(1-20%)
=$440/0.8
=$550
Therefore the marked price is $550
2007-07-27 12:40 am
1. ($1,998,000 - $1,800,000) / $1,800,000 * 100%
= $198,000 / $1,800,000 * 100%
= 0.11 * 100%
= 11% answer (percentage change of the price)
2. $888 * 15%
= $8.88 * 15
= $133.2 answer (discount)
3. $440/(1-20%)
= $440/80%
= $44000/80
= $550 answer (marked price)
= $198,000 / $1,800,000 * 100%
= 0.11 * 100%
= 11% answer (percentage change of the price)
2. $888 * 15%
= $8.88 * 15
= $133.2 answer (discount)
3. $440/(1-20%)
= $440/80%
= $44000/80
= $550 answer (marked price)
2007-07-27 12:19 am
1) it increase 0.011 %
2) 754.8
3)440/0.8 = 550
2) 754.8
3)440/0.8 = 550
收錄日期: 2021-04-13 13:44:48
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20070726000051KK03066