In the third grade, there are <<19=19>>19 students

In the fourth grade, there are 2 × 19 = <<2*19=38>>38 students

Counting the boys and girls in the second grade, there are 10 + 19 = <<10+19=29>>29.

There are 19 + 38 + 29 = <<19+38+29=86>>86 students in total.

# Answer

86
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
There are 19 students in the 3rd grade and twice that number in the 4th grade. There are 10 boys and 19 girls in the 2nd grade. How many students are there in total?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
86
There are 19 students in the 3rd grade and twice that number in the 4th grade. There are 10 boys and 19 girls in the 2nd grade. How many students are there in total?
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