Ingrid has been working hard on her MBA for the past year. She recognizes how efficint she has become at puling together a SWOT analysis for each new case study. After thinking about it more, she realizes she is enjoying the benfits of a learning curve. Ingrid estimates that her first SWOT analysis took one hour. She further estimates an $85\%$ learning curve. Assuming this learning curve percentage, how many minutes did it take Ingrid to conduct her second SWOT $117$ analysis? Her fourth? Her eighth?