Question

Q. Juhi sells a washing machine for rupees 13,500.
she loses 20% in bargain what was the price she bought It?​

Answer 1

Solution :

$\bf{\red{\underline{\bf{Given\::}}}}$

Juhi sells a washing machine for Rs.13500. She loses 20% in bargain.

$\bf{\red{\underline{\bf{To\:find\::}}}}$

The price she bought it.

$\bf{\red{\underline{\bf{Explanation\::}}}}$

Let the Cost price of washing machine be Rs.r

Using formula :

$\boxed{\bf{Selling\:price\:(S.P)=C.P\bigg[1-\frac{Loss\:\%}{100} \bigg]}}}}$

A/q

$\longrightarrow\rm{13500=r\bigg[1-\dfrac{20}{100} \bigg]}\\\\\\\longrightarrow\rm{13500=r\bigg[\dfrac{100-20}{100} \bigg]}\\\\\\\longrightarrow\rm{13500=r\bigg[\dfrac{80}{100} \bigg]}\\\\\\\longrightarrow\rm{13500=\dfrac{80r}{100}}\\\\\\\longrightarrow\rm{80r=13500\times 100}\\\\\\\longrightarrow\rm{r=\cancel{\dfrac{1350000}{80} }}\\\\\\\longrightarrow\rm{\pink{r=Rs.16875}}$

Thus;

$\underbrace{\sf{The\:cost\:price\:of\:washing\:machine\:\boxed{\bf{Rs.16875}}}}}$

Answer 2

Answer:

loss%=20%. =100/(100-20)×13500. =100/80×13500. =16875