F.1 maths...

(a)what is the marked price of the car?

=120000+(120000*20%)
=$144000

(b)what si the selling price?

=144000*(1-10%)
=$129600

(c)what is the profit precent made be the saleman?

=129600-120000
=$9600

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希望幫到你啦~~

2006-11-04 11:51:52 補充：
(c)what is the profit precent made be the saleman?=(129600-120000)/120000*100%=9600/120000*100%=8%

the marked price of the car:
120000*20%
=120000*20/100
=1200*20
=$24000

the selling price is:
240000*(1-10%)
=240000*90/100
=$216000

the profit made be the saleman:
216000-120000
=$96000

Marked price= 12000*(1+20%)
=$144000

Selling price=144000*(1-10%)
=$129600

profit percentage=(129600-120000)/120000*100%
=8%

a)The marked price of the car
= cost price X (1+20%)
= $120,000 X 120%
= $144,000

b)The selling price
= marked price X (1-10%)
= $144,000 X 90%
= $129,600

c)Profit % made
= Profit made/ Cost price X 100%
= ($129,600-$120,000)/$120,000 X 100%
= $9,600/$120,000 X 100%
= 8%

Profit made = Selling price - Cost Price

a）The marked price of the car = $12000 * (1+20%)
= $12000 * (120%)
= $14400
b）The selling price of the car = $14400 * (1-10%)
= $14400 * (90%)
= $12960
c）The profit made by the saleman = $12960 - $12000
= $960
Hence, the percentage is = ($960/$12000) * 100% = 8%

俾D式你，其實好容易計：
profit percentage = (selling price - cost) / cost price * 100%

同埋，１０％ discount 就係 (1-10%)marked price = selling price
如果係10％off的話，唔係１０％既marked price！！！
記住都係(１－１０％)

(a)The marked price of the car:
$120000x(1+20%)
=$120000x120%
=$144000

(b)The selling price:
$144000x(1-10%)
=$144000x90%
=$129600

(c)The profit percentage:
$(129600-120000)/$120000 x100%
=8%

Marked price= 12000*(1+20%)
=$144000
Selling price=144000*(1-10%)
=$129600
profit percentage=(129600-120000)/120000*100%
=8%