Ruel has a total of 4 x 10 = <<4*10=40>>40 stamps from the four books.

He also has 6 x 15 = <<6*15=90>>90 stamps from the six books.

Therefore, he has a total of 40 + 90 = <<40+90=130>>130 stamps.

# Answer

130
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Ruel has four books of 10 stamps and six books of 15 stamps. How many stamps does Ruel have?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
130
Ruel has four books of 10 stamps and six books of 15 stamps. How many stamps does Ruel have?
train