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A-man-buys-a-hen-at-9-and-sells-it-at-11-He-buys-the-same-hen-later-on-at-12-and-sells-it-now-at-14-What-is-his-total-benefit-




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

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