Math, asked by chinnarisrinath, 1 year ago

how much percent above the cost price should a shopkeeper mark his goods so that after allowing a discount of 20percent on the marked price, he gains 12percent

Answers

Answered by noornamankhanna
334

let the CP be Rs. 100 and MP be Rs. x

gain % after discount = 12%

gain = 12% of 100 = Rs. 12

⇒ SP of the article = CP + Gain

= Rs. (100 + 12) = Rs. 112

Discount % = 20%

Discount = 20% of Marked Price

 = Rs.20/100 * x

= Rs. 20x/100

= Rs. x/5

as da question says

marked Price - discount = SP

=> x - x/5 = 112

=> (5x - x)/5 = 112

=> 4x/5 = 112

=> x = 112 * 5/4 = Rs. 140

marked Price = Rs. 140

amount marked above the CP = MP - CP

= Rs. (140 - 100)

= Rs. 40

∴ % amount marked above the CP

= Amount increased/CP * 100

= 40/100 * 100

=40%

Hope it helps

Answered by RvChaudharY50
51
  • Marked price of goods must be 40% above cost price in order to gain 12% after giving 20% discount .

Given :-

  • Discount = 20%
  • Gain = 12%

To Find :-

  • How much percent above the cost price is marked price ?

Formula used :-

  • Selling price (SP) = {CP × (100 + gain%)}/100
  • Marked price (MP) = (SP × 100) / (100 - Discount %)

Solution :-

Let us assume that, the cost price of the goods is equal to Rs. 100x .

So,

→ CP of goods = Rs. 100x

→ Gain = 12%

then,

→ SP of goods = {CP × (100 + gain%)}/100

→ SP = {100x × (100 + 12)}/100

→ SP = (100x × 112)/100

→ SP = Rs. 112x .

Now,

→ SP of goods = Rs. 112x

→ Discount = 20%

→ MP of goods = (SP × 100) / (100 - Discount %)

→ MP = (112x × 100) / (100 - 20)

→ MP = (112x × 100) / 80

→ MP = Rs. 140x

therefore, marked price above cost price :-

→ MP - CP = 140x - 100x = Rs. 40x

hence,

→ Required % = (40x × 100) / 100x

→ Required % = 40% (Ans.)

Marked price of goods must be 40% above cost price .

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