Four sisters bought a present for their mother. They received a 10% discount on the original price of the gift. After the discount was taken, each sister paid [tex]$9.00. What was the original price of the gift?

Hint: Use the equation $[/tex]\frac{P - 0.1P}{4} = 9.00[tex]$, where $[/tex]P$ is the original price of the gift.



Answer :

To find the original price of the gift, let's break down the problem step by step using the provided hint.

1. Understand the given information:
- Four sisters bought a gift for their mother.
- They received a 10% discount on the original price of the gift.
- After the discount, the total price was divided equally among the four sisters, with each sister paying [tex]$9.00. 2. Define the variable: - Let \( P \) be the original price of the gift. 3. Express the discounted price: - The discount amount is 10% of the original price, which is \( 0.1P \). - Therefore, the discounted price is \( P - 0.1P = 0.9P \). 4. Set up the equation using the information about the equal payments: - After the discount, the total amount paid was divided equally among the four sisters. - Thus, each sister's share is \( \frac{0.9P}{4} \). - According to the problem, each sister paid $[/tex]9.00.

5. Form the equation:
- Based on the above information, we have:
[tex]\[ \frac{0.9P}{4} = 9.00 \][/tex]

6. Solve the equation:
- To isolate [tex]\( P \)[/tex], first multiply both sides of the equation by 4:
[tex]\[ 0.9P = 9.00 \times 4 \][/tex]
- Simplify the right side:
[tex]\[ 0.9P = 36.00 \][/tex]
- Now, divide both sides by 0.9 to find [tex]\( P \)[/tex]:
[tex]\[ P = \frac{36.00}{0.9} \][/tex]
- Simplify the division:
[tex]\[ P = 40.00 \][/tex]

7. Conclusion:
- The original price of the gift was $40.00.

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