Question

a radio was sold for 500rupees at a loss of 20percentage find the cost price​

Answer 1

(100-20)CP=500
or 80CP=500
or 100CP =500*100/80
or 100CP=625
So cost price is 625

Answer 2

$\large\blue{\maltese{\purple{\bold{SoLuTioN}}}}$

★ Given that ,

• SP of the radio = 500₹
• Loss percentage = 20%

★ To Find ,

• CP of the radio.

★ We know that ,

$\blue{\boxed{\purple{\bold{CP\:={\bigg({\frac{100}{100-Loss\%}}\times{SP}{\bigg)}}}}}}$

★ According to the question ,

➙ ${CP\:={\bigg({\frac{100}{100-80}}\times{500}{\bigg)}}}$

➙ ${CP\:={\bigg({\frac{100}{80}}\times{500}{\bigg)}}}$

➙ ${CP\:={\bigg({\frac{5}{4}}\times{500}{\bigg)}}}$

➙ CP = 5 × 125

➙ CP = 625

$\therefore$ Cost price of the radio was 625 ₹ .

Hence done ✔