Previous in Probability and Statistics Next in Probability and Statistics
Question Number 89898 by Ar Brandon last updated on 19/Apr/20
$${In}\:{a}\:{classroom}\:{when}\:{the}\:{students}\:{sit} \\ $$$$\mathrm{2}\:{per}\:{bench},\:\mathrm{11}\:{students}\:{are}\:{left}\:{with} \\ $$$${no}\:{sits}.\:{And}\:{when}\:{they}\:{sit}\:\mathrm{3}\:{per}\:{bench} \\ $$$$\mathrm{7}\:{benches}\:{are}\:{left}\:{empty}.\:{Determine}\:{the}\:{number} \\ $$$${of}\:{students}\:{in}\:{this}\:{classroom}. \\ $$
Commented by MJS last updated on 19/Apr/20
$${s}=\mathrm{2}{b}+\mathrm{11} \\ $$$${b}=\frac{{s}}{\mathrm{3}}+\mathrm{7} \\ $$$$\Rightarrow\:\mathrm{75}\:\mathrm{students}\:\mathrm{and}\:\mathrm{32}\:\mathrm{benches} \\ $$
Commented by Ar Brandon last updated on 20/Apr/20
$${cool}! \\ $$
Commented by Ar Brandon last updated on 20/Apr/20
$${Do}\:{you}\:{have}\:{an}\:{idea}\:{on}\:{how}\:{to}\:{proceed}\:{with}\:{Q}\mathrm{89906}\:{please}? \\ $$