Question

Q. Juhi sells a washing machine for Rs 13,500. She loses 20% in the bargain. What was the price at which she bought it?


{ Solve it using Unitary Method }


Expect best explaination

Answer 1

given, sp - ₹13,500
loss% - 20%
to find cp,
$cp = \frac{100}{(100 - l\%)} \times sp$
$= \frac{100}{(100 - 20)} \times 13500$
$= \frac{100 }{80} \times 13500$
$= 5 \times 3375$
$= 16875$
so, cp= ₹16875

Answer 2

S.P of Washing Machine=13,500

=Loss percent=20%

=Let the Cost Price of washing machine be x.

=Since, Loss=Loss% of C.P.

=Loss=20%of x

=20/100*x=1/5*x=x/5

Therefore, S.P.=C.P.-Loss

=13500=x-x/5

=13500=5x/5 -x/5

=13500=5x-x/5

=13500=4x/5

=13500*5=4x

=13500*5/4=x

=67500/4=x

=16875=x

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