Question

If a man reduces sp of a fan from rs. 4000 to 3800 his loss increases from x per cent to (x+4) per cent. What is the cost price​

Answer 1

Answer:

Solution

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Correct option is C)

Let the C.P. = Rs. x.

Then First loss % =

x

(x−400)

×100=

x

100x−40000

%

Second loss % =

x

(x−380)

×100=

x

100x−38000

%

Given,

x

(100x−38000)

−

x

(100x−40000)

=4

⇒100x−38000−100x+40000=4x

⇒2000=4x

⇒x=500

Answer 2

Answer:

here is your answer

500

Step-by-step explanation:

Let the C.P. = Rs. x.

Then First loss % = x(x-400)x100=x100x-40000% Second loss % =x(x-380)x100=x100x-38000% Given, x(100x-38

00)-x(100x-40000)=4

→100x-38000-100x+40000=4x

⇒ 2000=4x

⇒x=500