Answer:
A | $24.99 before the $10 discount, $14.99 afterwards
B | $39.98 before the 50% discount, $19.99 afterwards
Step-by-step explanation:
For a, Half of $49.98 is $24.99, after the $10 off, it is $14.99
For b, $49.98 - $10 = $39.98, half of $39.98 is $19.99
(been a few centuries since I last saw you btw, hope I can find you somewhere in the future, maybe another question?)