Sin Bik 發問時間: 科學數學 · 7 年前

Maths question(quick!!)(20!!!!

1.A travel agency offers an air-ticket and hotel package as follows:

Marked price Discount per cent

Air-ticket $2800 30%

Hotel $1050 per night for 4 nights 20%

Find the discount per cent of the whole package.

2.The marked price of a TV set is $6000.It is now sold at a discount of 10%.If a customer pays by a certain credit card,an extra discount of 10% of the selling price will be offered.Compared with the marked price,how much does Paul save if he pays by the preferred credit card?

3.In a bookshop's annual sale,all the books are sold at20% off.If a customer spends more than $200,an extra discount of 5% on the selling price will be offered.

(a)Samuel buys a book for$68,what is the marked price of the book?

(b)If Kathy wants to buy two books marked $200 and $100 respectively,how much should she pay?

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  • 匿名使用者
    7 年前
    最佳解答

    Maths question1.A travel agency offers an air-ticket and hotel package as follows:

    Marked price Discount per cent

    Air-ticket $2800 30%

    Hotel $1050 per night for 4 nights 20%

    Find the discount per cent of the whole package.

    Whole Package price before discount:$2800+$1050*4=$7000

    Discount for whole package:$2800*30%+$4200*20%=$840+$840=$1680

    Discount per cent of the whole package

    =(Discount for whole package/Whole Package price before discount)*100%=(1680/7000)*100%=24%2.The marked price of a TV set is $6000.It is now sold at a discount of 10%.If a customer pays by a certain credit card,an extra discount of 10% of the selling price will be offered.Compared with the marked price,how much does Paul save if he pays by the preferred credit card?

    Discount at 10%= $6000*10%=$600

    Selling price at 10 % discount=Marked price - Discount=$6000-$600

    =$5400

    Extra preferred credit card discount=Selling price at 10 % discount*10%=$5400*10%

    =$540

    Money Paul saves if he pays by the preferred credit card=Discount at 10%+ Extra preferred credit card discount=$600+$540

    =$1140

    3.In a bookshop's annual sale,all the books are sold at 20% off.If a customer spends more than $200,an extra discount of 5% on the selling price will be offered.(a)Samuel buys a book for$68,what is the marked price of the book?

    Price after 20% discount=80% of marked price=$68

    Marked price=$68/80%=$85

    (b)If Kathy wants to buy two books marked $200 and $100 respectively,how much should she pay?Total marked price of books Kathy wants to buy=$200+$100=$300

    At 20% off, price=$300*(1-20%)=$240, which is greater than$200

    At extra discount of 5%, final discounted price=Money Kathy should pay

    =$240*(1-5%)

    =$228

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