During the annual school carnival, three friends bought different items.

- Aisha purchased a novel for 14.80 AED and a pen stand for 5.65 AED.
- Zayd bought games worth 48.90 AED but returned one game and received 13.40 AED back.
- Mariam bought cupcakes for 18.75 AED and juice for 9.25 AED.

Answer the following:

a) Find the total amount spent by Aisha.