Question

shopkeeper bought 60 erasers for rs 50 how many erasers should he sell for 50 rs in order to earn a profit of 20 %​

Answer 1

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QUESTION :-

shopkeeper bought 60 erasers for rs 50 how many erasers should he sell for 50 rs in order to earn a profit of 20 %

ANSWER :-

By selling a pen gain is Rs.2

and by selling a pencils, he loses 50 paise

and an eraser, he loses 15 paise

On one day, he gain =Rs.10

On that day he sold 10 pens and pencils and erasers in the ratio of 7:10

On ten pens, his gain =10×2=Rs.20

loss on pencils and erasers =Rs.20−Rs.10=Rs.10=1000 paise

Ratio in pencil and eraser =7:10

Let number of pencils =7x, then eraser =10x

7x×50+10x×15=1000

⇒350x+150x=1000

⇒500x=1000

⇒x=2

Numbe rof penciles =7×2=14

and number of erasers =10×2=20

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Answer 2

Concept:

Profit (P) is the money made when a product is sold for more than what it costs to produce.

Loss(L)

A loss is defined as the sum the seller experiences after selling the good for less than its cost.

Cost Price (CP)

Cost price refers to the price paid to purchase a good or commodity. Denoted as CP as well. This cost price is divided into two more categories:

Fixed Cost: Under any conditions, the fixed cost remains constant.

Variable Cost: It may change depending on the quantity purchased and other elements.

Selling price (SP)

The selling price is the price at which a product is sold. Typically, it is identified as SP. also known as a sale price on occasion.

Profit or Gain = Selling price – Cost Price

Loss = Cost Price – Selling Price

Profit percentage (P%) = (Profit /Cost Price) x 100

Loss percentage (L%) = (Loss / Cost price) x 100

Given:

Shopkeeper bought 60 erasers for rs 50

Find:

How many erasers should he sell for 50 rs in order to earn a profit of 20 %​

Solution:

Total investment = Rs 50 x 60

                            =Rs 3000

20% of 300= 20/100 x 3000

                   =600

Let the no. of erasers needed to sold to earn a profit of 20% be x

As per question,

50x-3000 = 600

50x=3600

x=72

Therefore, 72 erasers he should sell for 50 rs in order to earn a profit of 20 %​

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