Dollarama Inc. reported the following selected financial data (in thousands) for a recent year: 

Interest expense ......................................................... $ 100,605 

Income tax expense .......................................................206,328 

Profit for the year ........................................................... 564,039 

Total assets .................................................................. 3,716,456 

Total liabilities ............................................................. 3,808,652 

Cash provided by operating activities ......................   732,508 

Cash used by investing activities ................................. 199,313 

Calculate the following ratios: 

(a) Debt to total assets

(b) Interest coverage 

(c) Free cash flow