this is a mathswatch question , its not timed but its quite urgent (A LIL BIT) but can i have help

Answer:
£32.95
Step-by-step explanation:
36/4=9
Pens= 9×0.75=6.75
36/12=3
Pencils= 3×0.42=1.26
36/6=5
Rulers= 5×1.10=5.5
Pencil cases= 0.54×36=19.44
Altogether:
19.44+5.5+1.26+6.75=32.95