Instructions
Welcome, Robloxian! Use your maths skills to solve these challenges from the world of Roblox. Read each question carefully and show your working out in the space provided.
Section 1: Robux & The Avatar Shop
You have been saving up your Robux! Use your knowledge of percentages and multi-step problems to figure out these avatar shop dilemmas.
- You have 2,500 Robux in your account. You want to buy the 'Korblox Deathwalker' leg which costs 1,700 Robux and a 'Domino Crown' which costs 625 Robux. How much Robux will you have left?
- The 'Super Super Happy Face', which normally costs 4,000 Robux, is on sale with a 20% discount.
a) How much is the discount in Robux?
b) What is the new sale price of the face? - You want to buy three limited items. Their prices are 180 Robux, 355 Robux, and 215 Robux. You get a daily login bonus of 25 Robux. If you currently have 500 Robux, how many days will you need to log in to afford all three items?
Section 2: Game Time Problems
Let's jump into some games and see how maths can help you!
- In a 'Tower of Hell' server, there are 24 players. ⅝ (one-third) of the players are using a speed coil. ¼ (one-quarter) of the players are using a gravity coil. The rest are using no power-ups. How many players are using no power-ups?
- You are playing 'Adopt Me!' and trying to hatch pets. The ratio of common pets to legendary pets you have hatched is 9:2. If you have hatched 18 common pets, how many legendary pets have you hatched?
- In 'Blox Fruits', you need to deal 50,000 damage to defeat a boss. Your 'Flash Step' ability does 1,250 damage each time you use it. How many times must you use the 'Flash Step' ability to defeat the boss?
Section 3: Building in Brookhaven
You're designing a new house in 'Brookhaven'. Your garden is a perfect rectangle.
- Your new rectangular swimming pool is 12 metres long and 7 metres wide.
a) What is the perimeter of the pool?
b) What is the area of the pool?
Section 4: Server Statistics
You are checking the player count on your favourite game throughout the week.
- The number of players in the server at 5 pm each day was:
Monday: 35
Tuesday: 42
Wednesday: 38
Thursday: 50
Friday: 65
What was the mean (average) number of players in the server at 5 pm that week? (Round to the nearest whole number if needed).
Answer Key
Section 1: Robux & The Avatar Shop
- 1,700 + 625 = 2,325 Robux.
2,500 - 2,325 = 175 Robux left. -
a) 20% of 4,000 is (4,000 / 100) * 20 = 800. The discount is 800 Robux.
b) 4,000 - 800 = 3,200 Robux. - 180 + 355 + 215 = 750 Robux (total cost).
750 - 500 = 250 Robux (needed).
250 / 25 = 10. You will need to log in for 10 days.
Section 2: Game Time Problems
- ⅝ of 24 = 8 players (speed coil).
¼ of 24 = 6 players (gravity coil).
8 + 6 = 14 players with power-ups.
24 - 14 = 10 players with no power-ups. - The ratio is 9:2. To get from 9 to 18, you multiply by 2.
So, you must also multiply the other side by 2.
2 * 2 = 4 legendary pets. - 50,000 / 1,250 = 40 times.
Section 3: Building in Brookhaven
-
a) Perimeter = (12m + 7m) * 2 = 19 * 2 = 38 metres.
b) Area = 12m * 7m = 84 square metres (or 84m²).
Section 4: Server Statistics
- 35 + 42 + 38 + 50 + 65 = 230 (total players).
230 / 5 (days) = 46 players.