$2.$ Selected financial statements from Syarikat Adam, for the year end as below.

$\backslash$table$[[,($RM$)],[$Sales$,720,000],[$Purchases$,480,000],[$COGS$,640,000],[$Account Receivable,$80,000],[$Account Payable,$40,000],[$Inventories$,100,000]]$

a$)$ Find the Cash Conversion Cycle $($days$).$

b$)$ State FIVE $(5)$ types of marketable securities$.$