1.A car is displayedin a show room at a discount of 18%.If the discount is
$9900,
1.a)If an extra discount of $1100 is offered, what is the discount percent now?
2.The original marked price of a suitcase is $700.The shop now raises the marked price by 20% and th en sells the suitcase at a 15% discount.Find the
selling priceof the suitcase.
3.A travel agency offers an air-ticket and hotel package as follows:
Marked price Discount per cent
Air ticket $2800 25%
Hotel $1050per night
for four night 20%
Find the discount per cent of the whole package.
F.1數學我要過程急急急急急要今天內
2010-12-01 5:40 am
回答 (2)
2010-12-01 6:12 am
✔ 最佳答案
Q1 Let Y be the costY x 18% = 9900
=55000
(9900 + 1100) / 55000 x100%
= 11000/55000 x100%
= 20%
Q2
700 x (1 + 20%) x (1 - 15%)
= 714
Q3
original market price
$2800 + 1050 x 4 night
=7000
discounted price
2800 x (1-25%) + 1050 x 4 x (1-20%)
=2100 + 3360
=5460
discount of the whole package
(7000 - 5460 ) / 7000 x 100%
= 22%
2010-12-01 6:55 am
1a)Marked price:
9900÷18%
=$55000
Discount percent:
9900-1100
55000 x100%
=16%
2)Selling price:
700x(1+20%)x(1-15%)
=$714
3)Discount:
2800x(1-25%)+1050x4x(1-20%)
=2100+3360
=$5460
9900÷18%
=$55000
Discount percent:
9900-1100
55000 x100%
=16%
2)Selling price:
700x(1+20%)x(1-15%)
=$714
3)Discount:
2800x(1-25%)+1050x4x(1-20%)
=2100+3360
=$5460
參考: 我都是F.1
收錄日期: 2021-04-13 17:40:39
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