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I can see that the page contains several math problems related to percentages and discounts. Let's walk through them one by one:

1. **First Question**: 
   - *A camera cost $276 before GST. Roy bought the camera and paid an additional 7% GST. How much did Roy pay for the camera?*

   The price of the camera is $276, and Roy needs to pay an additional 7% GST.
   To find the total amount Roy paid:

   \[
   \text{GST amount} = 276 \times 0.07 = 19.32
   \]
   \[
   \text{Total cost} = 276 + 19.32 = 295.32
   \]
   So, Roy paid **$295.32** for the camera.

2. **Second Question**: 
   - *Mrs. Suresh deposited $50,000 in a fixed deposit account at X2 Bank, which offered an interest rate of 2.2% per year. How much would Mrs. Suresh have in her fixed deposit account at the end of 1 year?*

   The interest earned in one year:
   \[
   \text{Interest} = 50,000 \times \frac{2.2}{100} = 1,100
   \]
   The total amount after 1 year:
   \[
   \text{Total amount} = 50,000 + 1,100 = 51,100
   \]
   So, Mrs. Suresh will have **$51,100** at the end of 1 year.

3. **Third Question (Mr. Teo's Oven Purchase)**:
   - *Mr. Teo wants to buy an oven. Which shop sells the oven at a lower price?*
   
   - **Shop A**:
     The usual price is $190 with a 15% discount. The discount amount:
     \[
     \text{Discount} = 190 \times 0.15 = 28.5
     \]
     The final price Mr. Teo will pay:
     \[
     190 - 28.5 = 161.5
     \]
     So, the price at **Shop A** is **$161.50**.

   - **Shop B**:
     The usual price is $200 with a 20% discount. The discount amount:
     \[
     \text{Discount} = 200 \times 0.20 = 40
     \]
     The final price Mr. Teo will pay:
     \[
     200 - 40 = 160
     \]
     So, the price at **Shop B** is **$160**.

   Hence, Shop B offers the oven at a lower price.

---

Would you like further clarifications or more details about any of the steps? 

Here are some additional questions you might find helpful:
1. What would the price of the oven be at Shop A if the discount were 10% instead of 15%?
2. If the interest rate for Mrs. Suresh's deposit were increased to 3%, how much would she have after 1 year?
3. How would the total price of the camera change if the GST was 10% instead of 7%?
4. What would happen to Mr. Teo's final price in Shop B if the usual price was $250 instead of $200, with the same discount?
5. If Roy received a 5% discount on the camera before GST was applied, how much would he pay after the GST?

**Tip**: When dealing with percentage problems, always break them down step by step: calculate the percentage first and then add or subtract it from the original amount.

1. A camera cost $276 before GST. Roy bought the camera and paid an additional 7% GST. How much did Roy pay for the camera? 
2. Mrs. Suresh deposited $50,000 in a fixed deposit account at X2 Bank, which offered an interest rate of 2.2% per year. How much would Mrs. Suresh have in her fixed deposit account at the end of 1 year? 
3. Mr. Teo wants to buy an oven. Which shop sells the oven at a lower price?

Solve math problems involving percentage calculations, GST, interest rates, and discounts. Learn step-by-step solutions for calculating GST on a camera purchase, interest on a fixed deposit, and finding the best discount price for an oven. Suitable for students in Grades 5-7.

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