With 25% off, you would be paying 75% of the original cost 100% - 25% = 75%)
Then there is another 40% off, so you would be paying 60% (100% - 40% = 60%)
Now you need to find 60% of 75%:
0.60 x 0.75 = 0.45 = 45% of the original price.
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