need help need helppppp​

Answer:
1. Php 52.50 | Php 402.50
2. Php 33.25 | Php 128.25
3. Php 3 520.00 | Php 12 320.00
4. Php 44.50 | Php 934.50
Step-by-step explanation:
I just followed the formula po so I hope nakatulong po yan :>
Answer:
1.)mark-up 52.50
selling price 382.50
2.) mark-up 33.25
selling price 128.25
3.) mark-up 3520
selling price 12320
4.)mark-up 445
selling price 1335
sana po makatulong