Subnet A
• Subnet the address space to provide for 100 hosts.
• Assign the Fa0/0 interface the first useable IP address.
• Assign PC1 the second useable IP address.
• Assign PC2 the last useable IP address in the subnet.
Subnet B
• Subnet the remaining address space to provide for 50 hosts.
• Assign the Fa0/1 interface the first useable IP address.
• Assign the laser printer the second useable IP address.
• Assign the server the last useable IP address in the subnet.

Well that's a nasty little bit of copy/paste LOL!

To split your subnet in half you move the subnet mask 1 bit to the right.
So because your current one is /24
You will use /25 which means your space of 255 adresses you split in half 127 each.
Subnet A 192.168.1.0/25
Subnet B 192.168.1.128/25
But because you don't need 127 adresses for second subnet you split it in half again
Which will give you
Subnet B 192.168.1.128/26
Available subnet 192.168.1.192/26
So now bearing in mind you need to leave last address for bradcasting you can figure out usable adresses yourself.

Regards