Using the figure below, estimate for this galaxy the ratio of dark matter mass to total mass
contained within a radius of 100 kpc. 
Definitions:
Subsidiary Ledger
A detailed ledger that contains all the transaction details of a specific account, which is summarized in the general ledger.
Accounts Payable
Liabilities or money owed by a company to its creditors or suppliers for goods and services received but not yet paid for.
General Ledger
A comprehensive record of all financial transactions that occur within a company, organized by account.
Sales Journal
A specialized accounting journal used to record all sales of goods and services on credit.
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