The maximum debt to capital ratio (measured as debt/total invested capital) the firm can use is 44.29%.
TIE:
TIE = EBIT / Interest
EBIT =$450,000 -$355,000
EBIT= $95,000
Interest:
4 = $95,000 / Interest
Interest = $95,000 / 4 = $23,750.
Amount of debt:
Amount of debt=$23,750 / .075
Amount of debt= $316.666.70
Debt Ratio:
Debt ratio= $316,666.70 / 715,000 ×100
Debt ratio=44.289%
Debt ratio=44.29%(Approximately)
Inconclusion the maximum debt to capital ratio (measured as debt/total invested capital) the firm can use is 44.29%.
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