Question Number 201627 by professorleiciano last updated on 09/Dec/23
Answered by mr W last updated on 10/Dec/23
$${for}\:\mathrm{200}\:{meals}\:\mathrm{6}\:{cooks}\:{each}\:{working}\: \\ $$$$\mathrm{6}\:{hours}\:{are}\:{needed},\:{i}.{e}.\:{totally} \\ $$$$\mathrm{36}\:{working}\:{hours}\:{are}\:{needed}\:{for}\: \\ $$$$\mathrm{200}\:{meals}. \\ $$$${now}\:\mathrm{400}\:{meals}\:{must}\:{be}\:{cooked},\:\mathrm{72}\: \\ $$$${working}\:{hours}\:{are}\:{needed}.\:{since} \\ $$$${each}\:{cook}\:{works}\:\mathrm{3}\:{hours}\:{more}\:{than} \\ $$$${before},\:{i}.{e}.\:\mathrm{9}\:{hours}\:{each}\:{day},\:{the} \\ $$$${company}\:{needs}\:{totally}\:\frac{\mathrm{72}}{\mathrm{9}}=\mathrm{8}\:{cooks},\: \\ $$$${so}\:{it}\:{needs}\:{to}\:{hire}\:\mathrm{2}\:\left({additional}\right) \\ $$$${cooks},\:{i}.{e}.\: \\ $$$${answer}\:\left({a}\right)\:{is}\:{correct}. \\ $$