Level 3
An refrigerator, a oven and a TV cost $470. The TV cost $85 more than the refrigerator. The refrigerator cost $55 more than the oven. What was the cost of the oven?
Level 3
Kim had some stickers at first. After he bought another 48 stickers, he had thrice as many stickers as before. How many stickers did Kim have at first?
Level 3
Iris had some candies at first. After she gave away 3 candies to her sister and ate another 3 candies, she went to buy another 42 candies. In the end, she had thrice as many candies as before. How many candies did iris have at first?
Level 3
The length of Table X is twice that of Table Y. The length of Table Y is thrice that of Table Z. Find the length of Table X if Table Z is 146 cm long.
Level 3
A baby elephant weighs 85 kg. A young elephant is twice as heavy as a baby elephant. An adult elephant is thrice as heavy as a young elephant. Find the mass of the adult elephant.