Cambodia, seven labourers, each making the equivalent of $$3\mathrm{.}00$ per day, can produce $42$ units per day. In China, ven labourers, each making the equivalent of $$2\mathrm{.}25$ per day, can produce $45$ units. In Winnipeg, four labourers, ch making $$63\mathrm{.}00$ per day, can make $102$ units.

sed on labour costs only, the most economical location to produce the item is $,$ with a labour cost per t of $$.($Enter your response rounded to two decimal places.$)$