Question 1150773
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Example: 


Let's say an item costs $100.


Apply the 10% discount. This means you save $10 and the item is now worth $90. We can see that $10 is 10% of $100. You can think of it as "you save 10% but pay the remaining 90%".


Now apply the 15% discount. This means we save 15% but still have to pay 85% of the remaining value. Apply 85% to $90 and we get 0.85*90 = 76.50


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We started with $100 and ended up at $76.50
That's a difference of 100 - 76.50 = 23.50


So that's an overall discount of 23.5/100 = 23.5%


While this is close to 25%, its not quite there. It would be nice if the percentage discounts added up like 10%+15% = 25%, but unfortunately it doesn't work. You have the correct thinking in saying the answer is "no". 
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