Level 3
A rectangular tank has a volume of 1920 cm3. Given that the ratio of its length to its breadth is 5 : 3 and its height is 8 cm, find the length of the tank.
Level 2
Kenny had $63. He spent 17 of the money on a pen. He then spent 23 of his remaining money on a pencil case. How much did he spend on the pencil case?