(5條數學)緊急交功課

a)求零售商向生產商購入每部收音機的價錢。
$300 x (1 + 20%) = $360

b)若零售商以每部$540的價錢出售該款收音機，求盈利百分率。
(540 - 360) / 360 = 50%

c)若零售商以30%的盈利百分率出售該款收音機，問售價是多少？
360 * ( 1 + 30%) = $468

a)求家私店東主購入該套沙發的價錢。
5250 / (1 + 25%)
= 5250 / 1.25
= $4200

b)該套沙發的生產成本是多少？
= 4200 / (1 + 5%)
= $4000

c)若生產商把該沙發以$4500直銷給顧客，求生產商的盈利百分率。
= (4500 - 4000) / 4000 = 12.5%

1.
a) $300 x (1+20%) = $360
b) ($ 540 - $360) / 360 x 100% = 50%
c) $360 x (1+30%) = $468

2. (a) 5250/ (1+25%)
= $ 4200

(b) 生產商的價錢:
=$4200 / 1.05
= $4000

(c) ($4500 - $4000) / 4000 x 100%
= 12.5%

1a. 300*(1+20%)
=300*1.2
=360
b. (540-360)/360*100%
=180/360*100%
=0.5*100%
=50%
c 360*(1+30%)
=360*1.3
=468
2a 5250/(1+25%)
=5250/1.25
=4200
b 4200/(1+5%)
=4200/1.05
=4000
c (4500-4000)/4000*100%
=500/4000*100%
=12.5%