Question

find the gain or loss percent if CP =900, SP =990.​

Answer 1

gain=990-900

=90

gain %=90/900*100

10%

Answer 2

CP = 900

SP = 990

SP > CP = Profit

$\small\boxed{Formula\:to\:find\:profit:}$

$\tt\pink{SP-CP}$

990-900

= 90

$\small\boxed{Formula \:to \:find\:Profit \: percentage}$

$\tt\pink{ Profit \: percentage = 100 × Profit/CP }$

= 100 × 90 / 900

= 9000/ 900

= 10%

$\small\boxed{Hence\:the\:gain\: percentage = 10}$

$\small\fcolorbox{red}{yellow}{@SpringBlossom}$