The least number of square tiles that will be needed to pave a plot 225 m by 30 m is _____.
A 30 tiles
B 15 tiles
C 25 tiles
D 45 tiles
If 'clock' is called 'television', 'television' is called 'radio', 'radio' is called 'oven', 'oven' is called 'grinder' and 'grinder' is called 'iron', then in what will a lady use to bake?