Math, asked by aryan1239960, 1 year ago

An article marked at r.s 800is sold at a discount of 10%. Find its cost price if the dealer makes a profit of 20%. Also ,find the profit %if no discount had been allowed

Answers

Answered by NidhraNair
5
hello...


 ᴍᴘ = 800

ᴅɪsᴄᴏᴜɴᴛ= 10%

sᴘ = 90 / 100 * 800 =720

ᴀs ʜᴇ ɪs sᴛɪʟʟ ɢᴀɪɴɪɴɢ 20%

ᴄᴘ = 100 / 120 * 720

= 600.




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aryan1239960: thank you
NidhraNair: welcome
aryan1239960: from which class are you
NidhraNair: 11
Answered by nehu215
3

Step-by-step explanation:

Solution :

Let the number of 10 rupees note be x and 20 rupees not be ( 50 - x)

Total sum = 800

Now,

10 rupee notes = 10x and

20 rupee notes = 20(50 - x)

According to the question :

\longrightarrow \sf \: 10x + 20(50 - x) = 800⟶10x+20(50−x)=800</p><p></p><p>[tex]\longrightarrow \sf \: 10x + 1000 - 20x = 800⟶10x+1000−20x=800

\longrightarrow \sf \: 10x - 20x + 1000= 800⟶10x−20x+1000=800

\longrightarrow \sf \: - 10x = 800 - 1000⟶−10x=800−1000

\longrightarrow \sf \: - 10x = - 200⟶−10x=−200

\longrightarrow \sf \: x = \dfrac{200}{10}⟶x=

10

200

\longrightarrow \sf \: x =20⟶x=20

\therefore∴ Number of 10 rupee notes = 20 and number of 20 rupee notes = (50 - 20) = 30

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