Question

Mahesh sells a laptop to Shyam at a profit of 10%. Shyam sells Keshav to him at a profit of 12%. Keshav sells the laptop to Sheetal at a profit of 15%. By what percentage has the laptop price increased?
महेश , श्याम को 10 % के लाभ पर एक लैपटॉप बेचता है । श्याम , केशव को 12 % के लाभ पर उसे बेच देता है । केशव लैपटॉप को 15 % के लाभ पर शीतल को बेच देता है । लैपटॉप के मूल्य में कितने प्रतिशत कि वृद्धि हुई है ?​

Answer 1

Let cost price of laptop be Rs. x

∴ Profit =

100

15x

Rs

∴ selling price =Rs(

100

15x

+x)=Rs.

100

115x

New selling price =Rs. (

100

115x

−

100

115x

×

100

10

)

=Rs.

100

115x

(

100

90

)

=Rs.

1000

1035x

∴ Profit =(

1000

1035x

−x)=Rs.

1000

35x

Now,

1000

35x

=1050

∴ x=30,000

∴ Cost price of Laptop =Rs. 30,000

Answered By=shreyash. .......

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