Answer: $ 234
Explanation:
Given: The selling price of 1 kg cumin = $7.20
Then, the selling price of 90 kilograms of cumin =

Thus, the selling price of 90 kilograms of cumin =

The net profit on selling 90 kg of cumin = $414
We know that Profit = Selling price -Expenses
⇒ Expenses=Selling price -Profit
⇒Expenses=

⇒Expenses

Therefore, Alexandra's weekly expenses=$ 234