If something is quicker to happen, it takes less time.
An egg takes 4 minutes to cook.
A cabbage takes 10 minutes to cook.
The egg is quicker to cook.
If something is slower to happen, it takes more time.
An egg takes 4 minutes to cook.
A cabbage takes 10 minutes to cook.
The cabbage is slower to cook.
Does that make sense?
Let's answer some questions now about things being slower or quicker.