Hint: Check each word carefully.
It is incorrectly spelled, it should be fourth.
If Kev has 3 piles of sweets and Daniel has 5 piles of sweets and they place them together into one large pile...
...how many piles of sweets would there be?
Hint: How many piles?
Answer: One large one.
Can you tell what this rebus is?
Hint: Say what you see.