To find the sale price after applying the 25% coupon, you first need to calculate the discount and then subtract it from the regular price.
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Calculate the amount of the discount: \[ \text{Discount} = \text{Regular Price} \times \text{Discount Rate} = 60 \times 0.25 = 15 \]
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Subtract the discount from the regular price: \[ \text{Sale Price} = \text{Regular Price} - \text{Discount} = 60 - 15 = 45 \]
Therefore, the sale price is \( \boxed{45} \).