Question $7$:

Suppose your company imports computer motherboards from Singapore. The exchange rate is currently $1\mathrm{.}2861$ S$$/$US$$.$ You have just placed an order for $28,000$ motherboards at a cost to you of $232\mathrm{.}00$ Singapore dollars each. You will pay for the shipment when it arrives in $90$ days. You can sell the motherboards for $$195$ each.

a$-$ What is your profit at the current exchange rate?

b$-$What is your profit if the exchange rate goes up by $10$ percent over the next $90$ days?

c$.$ What is your profit if the exchange rate goes down by $10$ percent over the next $90$ days?

d$-$What is the break$-$even exchange rate?