GST and Simple Interest
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GST and Simple Interest
💰 Part 1: GST Calculations
Remember: GST in New Zealand is 15%. To calculate GST: Price × 0.15
a) A book costing $40.00 GST = $__________
b) A phone costing $250.00 GST = $__________
c) A bicycle costing $480.00 GST = $__________
a) Shoes: $120.00 + GST = $__________
b) Laptop: $800.00 + GST = $__________
📈 Part 2: Simple Interest
Formula: Simple Interest = Principal × Rate × Time
Where: Principal = amount borrowed/invested, Rate = interest rate per year, Time = number of years
a) Principal: $500, Rate: 4% per year, Time: 3 years
Interest = $________ × ________ × ________ = $________
b) Principal: $1200, Rate: 6% per year, Time: 2 years
Interest = $________ × ________ × ________ = $________
Answer: $__________
🛍️ Part 3: Real-World Problems
Total amount: $__________
Total repayment: $__________
Hint: If the price including GST is 115% of the original price...
Original price: $__________
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