Math, asked by harishbaland, 9 months ago

एक दुकानदार एक जोड़ी चश्मे को 25% लाभ पर बेचता है. यदि वह इसे 25% कम में खरीदता तथा 10 रु० कम
में बेचता तो उसे 40% लाभ होता. इस एक जोड़ी चश्मे का क्रय-मूल्य कितना है ?​

Answers

Answered by amitsnh
3

Answer:

50 rupee

Step-by-step explanation:

mana ki kray mulya = x

25% labh par vikray mulya = 5x/4

naya kray mulya= 25% kam par

= x-x/4 = 3x/4

naya vikray mulya = 5x/4 - 10

labh = 5x/4 - 10 - 3x/4= x/2 - 10

%profit = (x/2 - 10)*100/(3x/4) = 40. (given)

(x - 20)*100*4/2*3x = 40

200x - 4000 = 120x

200x - 120x = 4000

80x = 4000

x = 4000/80

x = 50

Answered by sagniksankari1
1

Answer:

50 rupee

Step-by-step explanation:

mana ki kray mulya = x

25% labh par vikray mulya = 5x/4

naya kray mulya= 25% kam par

= x-x/4 = 3x/4

naya vikray mulya = 5x/4 - 10

labh = 5x/4 - 10 - 3x/4= x/2 - 10

%profit = (x/2 - 10)*100/(3x/4) = 40. (given)

(x - 20)*100*4/2*3x = 40

200x - 4000 = 120x

200x - 120x = 4000

80x = 4000

x = 4000/80

x = 50

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