Review Comments of Math Practice Questions Air Class Minecraft and Roblox Edition

Question 1: Selling Enchanted Swords (Minecraft)

Final Answer: 35.2 emeralds
Solving Steps:

  • Correctly calculated the cost price: 64 × 5 = 320 emeralds.
  • Correctly calculated the selling price for the first 40 swords: 40 × (5 + 20% profit) = 240 emeralds.
  • Correctly calculated the selling price for the remaining 24 swords: 24 × (80% of first week's price) = 115.2 emeralds.
  • Correctly calculated the total profit: 355.2 - 320 = 35.2 emeralds.

Feedback: All steps and calculations are correct. Well done!

Score: 2

Question 2: Roblox Game Pass Discount

Final Answer: 1500 Robux
Solving Steps:

  • Correctly set up the marked price (MP = 1.5C).
  • Correctly calculated the selling price (SP = 0.9C).
  • Correctly derived the loss (0.1C = 150).
  • Correctly solved for the cost price (C = 1500).

Feedback: Perfectly solved with clear steps.

Score: 2

Question 3: Profit/Loss on Minecraft Skins

Final Answer: Alex incurred a net loss of approximately 36.83 Robux.
Solving Steps:

  • Correctly calculated the cost price for the first skin (800 ÷ 1.15 ≈ 695.65).
  • Correctly calculated the cost price for the second skin (800 ÷ 0.85 ≈ 941.18).
  • Correctly calculated the total cost (≈ 1636.83) and total revenue (1600).
  • Correctly found the net loss (≈ 36.83).

Feedback: The steps and final answer are correct. Good job!

Score: 2

Question 4: Simple Interest on Emerald Loans (Minecraft)

Final Answer:
(a) 120 emeralds
(b) 6 years

Solving Steps:

  • (a) Correctly calculated simple interest: 500 × 0.06 × 4 = 120.
  • (b) Correctly solved for time: 180 = 500 × 0.06 × t → t = 6.

Feedback: Both parts are solved correctly.

Score: 2

Question 5: Compound Interest in Roblox

Final Answer: There is a 10 Robux difference.
Solving Steps:

  • Correctly calculated simple interest: 1000 × 0.10 × 2 = 200.
  • Correctly calculated compound interest:
  • Year 1: 1000 × 0.10 = 100.
  • Year 2: 1100 × 0.10 = 110.
  • Total: 210.
  • Correctly found the difference: 210 - 200 = 10.

Feedback: All steps are accurate. Well done!

Score: 2

Overall Score: 10