解釋比我同點做
1.Bakery A sells cakes at a 20% discount. Bakery B offers a promotion of
"buy 3 gets 1 free".If the marked prices of each cake at both bakeries are the same , which one offers a greater discount for buying a dozen of cakes?
maths
2006-11-04 8:54 pm
回答 (4)
2006-11-04 9:03 pm
✔ 最佳答案
Let the price of one cake be XBuying a dozen of cakes at A equals to
12*X*80% = 9.6X
Buying a dozen of cakes at B equals to
(12/4)*3*X=9X
Bakery B offers a greater discount for buying a dozen of cakes.
2006-11-04 9:05 pm
Let the price of 1 cake is $1
Bakery A:1x12x(1-20%)
=9.6
Bakery B:(3+1)/12 x3x1
=3x3x1
=9
Bakery B offers a greater discount for buying a dozen of cakes.
希望幫到你啦^o^
Bakery A:1x12x(1-20%)
=9.6
Bakery B:(3+1)/12 x3x1
=3x3x1
=9
Bakery B offers a greater discount for buying a dozen of cakes.
希望幫到你啦^o^
2006-11-04 9:02 pm
A店以 8 折出售蛋糕
B店提供 買 3 送 1 的優惠
若兩店蛋糕的售價相同
問在哪間店買 一打蛋糕 所獲折扣較大?
2006-11-04 13:03:28 補充：
弄錯了不是售價相同, 是標價相同
B店提供 買 3 送 1 的優惠
若兩店蛋糕的售價相同
問在哪間店買 一打蛋糕 所獲折扣較大?
2006-11-04 13:03:28 補充：
弄錯了不是售價相同, 是標價相同
2006-11-04 9:02 pm
Let x be the marked price of 1 cake
For Bakery A,
if we buy a dozen of cakes,
price:
12x *( 1 - 20% )
= 9.6 x
For Bakery B,
if we buy a dozen of cakes,
we only need to buy 9 cakes as buy 9 cakes will get 3 free cakes.
price = 9x
so, Bakery B offers a greater discount for buying a dozen of cakes
For Bakery A,
if we buy a dozen of cakes,
price:
12x *( 1 - 20% )
= 9.6 x
For Bakery B,
if we buy a dozen of cakes,
we only need to buy 9 cakes as buy 9 cakes will get 3 free cakes.
price = 9x
so, Bakery B offers a greater discount for buying a dozen of cakes
收錄日期: 2021-04-12 21:16:10
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