Answer:
The final price of the swimsuit is $84.00.
To calculate the final price, first calculate the original price after the 20% discount:
Original Price x (1 - Discount) = Final Price
$140 x (1 - 0.2) = $112
Then, calculate the final price after the additional 40% discount:
$112 x (1 - 0.4) = $84.00