Question

By selling an electric fan for rs 840,a dealer makes a profit of 5%. At what price should he sell it in order to double his profit? ​

Answer 1

Given :

price : rs 840

Rate : 5%

so , if he wanted to it in order to get double profit ,

We have to multiply ,

Price × Rate = 840 × 5 = Rs 4200

Answer 2

cp = sp × 100/100+p%

$840 \times \frac{100}{100 + 5} \\ \\ 840 \times \frac{100}{105} \\ \\ cut \: it \: and \: multiply \\ \\ = 800$
cp = 800

in order to get double profit multiply it by 2

p=5×2=10%

sp= cp × 100+p%/100

$800 \times \frac{100 + 10}{100} \\ \\ 800 \times \frac{110}{100} \\ \\ cut \: it \: and \: multiply \\ \\ = 880$

$\bold{ANSWER \:=\: HE \:SHOULD\: SELL}$

$\bold{IT\:FOR\:RS880}$

$\bold{HOPE \:IT\: WILL\: HELP\: YOU}$