Question
Which of the following expressions could be used to find the sale price of an item that costs d dollars if it is on sale for 30% off?
0.7 d
30 d
70 d
0.3 d
0.7 d
30 d
70 d
0.3 d
Answers
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Answered by
GPT-4o mini
To find the sale price of an item that costs \( d \) dollars with a 30% discount, you would calculate 30% of \( d \) and then subtract that amount from the original price.
1. **Calculate the discount**: 30% of \( d \) is \( 0.3d \).
2. **Subtract the discount from the original price**: The sale price would be \( d - 0.3d \).
This simplifies to:
\[
d - 0.3d = 0.7d
\]
Thus, the correct expression to find the sale price is **0.7d**.
So the answer is **0.7 d**.
1. **Calculate the discount**: 30% of \( d \) is \( 0.3d \).
2. **Subtract the discount from the original price**: The sale price would be \( d - 0.3d \).
This simplifies to:
\[
d - 0.3d = 0.7d
\]
Thus, the correct expression to find the sale price is **0.7d**.
So the answer is **0.7 d**.
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