The equation \( y = -16t^2 + 48t + 32 \) describes the height (in feet) of a projectile launched from an initial height of 32 feet with an initial velocity of 48 feet per second. Determine the time \( t \) at which the projectile will reach a height of 60 feet. Express your answer as a decimal rounded to the nearest tenth. Let's think step by step and output the final answer within \boxed{}.
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