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.
Level 3
Jerry bought 4 packets of biscuits. Katrine bought 2 times as many packets of biscuits as Jerry. If each packet costs $8, how much did Katrine spend on the biscuits?
Level 3
There are 624 stamps in a bag. Given that there are four times as many yellow stamps as red stamps and twice as many white stamps as yellow stamps, how many stamps in the bag are yellow?
