Question

the single discount equivalent to the successive discount of 20%, 10% and 5%.​

Answer 1

Answer:

$\huge \tt \red{\underline{Solution:}} \\ Let \: MP \: be \: 100. \: Then \\ Net \: SP =(100−5) \% \: of \: (100−10) \% \: of \: (100−20) \% \: of \: 100 \\ =95 \% \: of \: 90 \% \: of \: 80 \% \: of \: \\ 100=( \frac{95}{100} × \frac{90}{100} × \frac{80}{100} \times 100 ) =68.40 \\ Required \: discount =(100−68.40) \%=31.6 \% \\ \purple{\rule{45pt}{7pt}}\red{\rule{45pt}{7pt}}\pink{\rule{45pt}{7pt}}\blue{\rule{45pt}{7pt}}$