Question

Mr. Sharma sold a fan for ₹640 at loss of 20%. find the cost price of the fan​

Answer 1

₹800

Step-by-step explanation:

Sold Price (S.P.) = ₹640

Loss (%) = 20%

To find -

The Cost Price (C.P.)

Solution -

C.P. - Loss = S.P.

Let the cost price = x

$= > x - 20\% = 640 \\ \\ = > x - 20\%x = 640 \\ \\ = > x - x \frac{20}{100} = 640 \\ \\ = > x - \frac{20x}{100} = 640 \\ \\ = > \frac{100x - 20x}{100} = 640 \\ \\ = > 100x - 20x = 640 \times 100 \\ \\ = > 80x = 64000 \\ \\ = > x = \frac{64000}{80} \\ \\ = > x = 800$

So,

The cost price of Fan = ₹800.

hope it helps.

Answer 2

Answer:

Rs.800

Step-by-step explanation:

Given,

S.P. of the fan = Rs.640

Loss% = 20%

C.P. = ?

ATQ

=> C.P. = SP ( 100/100- Loss%)

=> C.P. = Rs.640 ( 100/100 - 20)

=> C.P. = Rs.640(100/80)

=> C.P. = Rs.800