Question Number 87935 by Ar Brandon last updated on 07/Apr/20
$${A}\:{man}\:{buys}\:{a}\:{hen}\:{at}\:\mathrm{9\$}\:{and}\:{sells}\:{it}\:{at}\:\mathrm{11\$}.\:{He}\:{buys} \\ $$$${the}\:{same}\:{hen}\:{later}\:{on}\:{at}\:\mathrm{12\$}\:{and}\:{sells}\:{it}\:{now} \\ $$$${at}\:\mathrm{14\$}.\:{What}\:{is}\:{his}\:{total}\:{benefit}\:? \\ $$
Answered by MJS last updated on 07/Apr/20
$$\mathrm{0}−\mathrm{9}+\mathrm{11}−\mathrm{12}+\mathrm{14}=\mathrm{4} \\ $$
Commented by Ar Brandon last updated on 08/Apr/20
$${Cool}! \\ $$$${A}\:{guy}\:{waa}\:{trying}\:{to}\:{convince}\:{me} \\ $$$${that}\:{we}'{ve}\:{got}\:{to}\:{calculate}\:{the}\:{benefit} \\ $$$${in}\:{each}\:{case}\:{and}\:{sum}\:{them}\:{up}\:{at}\:{the}\:{end}. \\ $$$${But}\:{I}\:{insisted}\:{on}\:{the}\:{contrary}.\: \\ $$