Un commerciante ha contratto un debito di \( € 480 \) e lo ha pagato 5 mesi prima della sca- denza al tasso di sconto del \( 9 \% \). Quanto ha pagato quel commerciante? [€ 462\( ] \)

You invest $2,500 in an account that earns 4% interest compounded quarterly. How much will the investment be worth after 5 years?

Calculate the gross profit margin for an item that cost the business \( \$ 12 \) and sold for \( \$ 30 \). Gross Profit = \( \$ 18 \) Gross Profit Margin = [?]\%

Calculate the gross profit margin for an item that cost the business \( \$ 36 \) and sold for \( \$ 80 \). Gross Profit \( =\$ 44 \) Gross Profit Margin \( =[?] \% \)

Calculate the gross profit margin for an item that cost the business \( \$ 3 \) and sold for \( \$ 25 \). Gross Profit = \( \$ 22 \) Gross Profit Margin = [?]\%

b. Kim decided to save RM 10,000 on 17 June 2023 in a bank that offered a simple interest rate of \( 8.8 \% \). Apply the Banker's Rule to determine the amount of interest earned on 28 September 2023 .