Wilfred eats 4 carrots on Tuesday and 6 carrots on Wednesday. If Wilfred wants to eat a total of 15 carrots from Tuesday to Thursday, how many carrots does Wilfred need to eat on Thursday?
Across Tuesday and Wednesday, Wilfred eats 4 + 6 = <<4+6=10>>10 carrots
On Thursday, Wilfred needs to eat 15 - 10 = <<15-10=5>>5 carrots
#### 5