請幫忙列式及解題目, 特別是 (find amount saves if a further 10% is given)
答案是$3358, 但唔明列式及如何計算出來
Peter wants to buy a TV the price of the TV is $4380 after after a 40% discount . Find amount saves if a further 10% is given.
請幫幫忙列式及解題目
2010-12-10 9:18 pm
回答 (3)
2010-12-10 9:30 pm
✔ 最佳答案
The price of the TV is $4380 after after a 40% discountThe original price=4380/(1-40%)=7300
The money saved for the first discount=7300-4380=2920
further 10% is given
The money saved for the second discount=4380x10%=438
Total amount saved=2920+438=3358
2010-12-10 9:37 pm
current price = $4380 = original x 60% original = $4380 / 60% = $7300if further 10% discount is given on current price, the new price will be $4380 x 90% = $3942original - new discounted price = $7300 - $3942 = $3358 列式original price is$4380 x 100/60= $7300 new price after further discount of 10%$4380 x 90%= $3942 amount saved$7300 - $3942= $3358
2010-12-10 9:30 pm
$4380 after a 40% discount.
Original price = $4380 / (1-40%) = $4380/0.6 =$7300
further 10% discount
purchase price=$4380x(1-10%) = $3942
Amount saved=$7300 - $3942 =$3358
Original price = $4380 / (1-40%) = $4380/0.6 =$7300
further 10% discount
purchase price=$4380x(1-10%) = $3942
Amount saved=$7300 - $3942 =$3358
收錄日期: 2021-04-23 18:28:21
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20101210000051KK00462