Assume a forex bureau has quoted the rates below Currency Buy (GHS) Sell (GHS) $ 6.3000 6.3500  7.7700 7.8000  8.8900 8.9500 

(a) If a traveler needs to purchase the amount of currencies below, calculate how much the traveler will need in cedis to purchase the total amount. $3000 4000 5000 

(b) In another case, if an individual has the amount of dollars, euros and pounds as shown above to sell to the forex bureau, calculate how much this individual will get in cedis after the sale