Question

A person sold two shirts each for 880. On one he
gained 10 and on the other he lost 20%. What is the
overal profit or loss percentage?​

Answer 1

$\Large{\bf{\orange{\mathfrak{\dag{\underline{\underline{Solution:-}}}}}}}$

${\displaystyle { \: \text{net profit margin}}={{{\text{revenue}}-{\text{cost}}} \over {\text{revenue}}}}$

1) profit of 10% on 880:

$\frac{100 \times880 }{110} = 968 \: rupees$

2) loss of 20% on 880:

$\frac{100 \times 880}{80} = 704 \: rupees$

Answer 2

Answer:

sp=cp(1 + p%/100)

cp=sp/(1+p%/100)

cp=sp/(1-l%/100)

l%=cp-sp/cp*100