Question

John sold histv for ruppes 10240 theredy suffering a loss of 20•/• .find the cost price of the tv.

Answer 1

John sold his Tv for rupees 10240 thereby suffering a loss of 20%

Selling Price = 10240

loss Percentage = 20%

Let the cost price be 'x'

we know that

cost price - cost price × loss percentage= selling price

x - x × 20% = 10240

x - 0.2x = 10240

0.8x = 10240

x = 10240/0.8

x = 12800 = cost price

Answer 2

let the cost price of tv be ' ₹ x '

Find the loss :
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loss = 20 % = 20 % of cost price

= 20% of x = ₹ 0.2 x

since, the selling price of tv = ₹ 10,240

Fnd the cost price :
--------------------------

cost price - loss = selling price

x - 0.2 x = 10240 => x ( 1 - 0.2 ) = 10240

0.8 x = 10240=> 8x ÷ 10 = 10240

8x = 102400=> x = ₹ 12800

therefore , cost price of tv = ₹ 12800

Answer: cost price = ₹12800

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