1.The marked price of a TV set is $4200.John buys is at a discount of 20% and then sells it to Mary.If john makes a profit of 20% after selling the TV set to mary,
(a)how much does he pay for the Tv set originally?
(B)how much does he sells the tv set to mary for?
f.1 maths %% give steps ,,thx!!!
2006-11-04 7:43 pm
回答 (3)
2006-11-04 8:24 pm
The marked price of a TV set=$4200
The discount percent of it=20%
The profit percentage after selling it to Mary=20%
a)The oringinally price he pay:
=$4200*(1-20%)
=$4200*80%
=$3360
b)The amount of money he sells it to Mary:
=$3360*(1+20%)
=$3360*120%
=$4032
The discount percent of it=20%
The profit percentage after selling it to Mary=20%
a)The oringinally price he pay:
=$4200*(1-20%)
=$4200*80%
=$3360
b)The amount of money he sells it to Mary:
=$3360*(1+20%)
=$3360*120%
=$4032
2006-11-04 7:59 pm
(A) 4200*(1-20%)
=4200*80%
=3360 dollars
He pays 3360 dollars for the tv set originally.
(B) 3360*(1-20%)
=3360*80%
=2688 dollars
He sells 2688 dollars for the tv set to Mary.
2006-11-04 12:05:20 補充：
(B)計錯左, 應該係(B) 3360*(1+20%) =3360*120% =4032 dollarsHe sells 4032 dollars for the tv set to Mary.
=4200*80%
=3360 dollars
He pays 3360 dollars for the tv set originally.
(B) 3360*(1-20%)
=3360*80%
=2688 dollars
He sells 2688 dollars for the tv set to Mary.
2006-11-04 12:05:20 補充：
(B)計錯左, 應該係(B) 3360*(1+20%) =3360*120% =4032 dollarsHe sells 4032 dollars for the tv set to Mary.
2006-11-04 7:50 pm
a. The price he pay = $4200 * (1-20%) = $4200 * 0.8 = $3360
b. The price he sell to Mary = $3360 * (1+20%) = $3360 * 1.2 = $4032
b. The price he sell to Mary = $3360 * (1+20%) = $3360 * 1.2 = $4032
收錄日期: 2021-04-23 15:53:49
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20061104000051KK01461