Question Number 161025 by MathsFan last updated on 10/Dec/21
$${Two}\:{commodities}\:{A}\:{and}\:{B}\:{cost} \\ $$$$\$\mathrm{70}\:{and}\:\$\mathrm{80}\:{per}\:{kg}\:{respectively}. \\ $$$${If}\:\mathrm{34}.\mathrm{5}{kg}\:{of}\:{A}\:{is}\:{mixed}\:{with}\:\mathrm{26}{kg} \\ $$$${of}\:{B}\:{and}\:{the}\:{mixture}\:{is}\:{sold}\:{at} \\ $$$$\$\mathrm{85}\:{per}\:{kg},\:{calculate}\:{the}\:{percentage} \\ $$$${profit}. \\ $$$${please}\:{help}\:{me}\:{out},\:{I}'{m}\:{somehow} \\ $$$${confused} \\ $$
Answered by MJS_new last updated on 11/Dec/21
$$\mathrm{70}×\mathrm{34}.\mathrm{5}+\mathrm{80}×\mathrm{26}=\mathrm{4495} \\ $$$$\mathrm{34}.\mathrm{5}+\mathrm{26}=\mathrm{60}.\mathrm{5} \\ $$$$\mathrm{4495}/\mathrm{60}.\mathrm{5}=\mathrm{74}.\mathrm{2975206}… \\ $$$$\mathrm{85}/\mathrm{74}.\mathrm{2975206}…\approx\mathrm{1}.\mathrm{14404894}… \\ $$$$\Rightarrow\:\mathrm{answer}\:\mathrm{is}\:\mathrm{14}.\mathrm{40\%} \\ $$
Commented by MathsFan last updated on 11/Dec/21
$${thank}\:{you}\:{sir} \\ $$