<|im_start|>system
You are a helpful assistant. You first think about the reasoning process in the mind and then provide the user with the answer. You should try to truely solve the question by yourself without cheating.  <|im_end|>
<|im_start|>user
 There are 19 marbles of varying sizes, weights, and types in a bowl. Out of these marbles, 5 are yellow glass marbles, and the remainder are blue and red marbles in the ratio 3:4 respectively. The types of marbles are glass, stone, and wooden. Yellow glass marbles have a combined weight of 8 grams. The red glass marbles weigh twice as much as the yellow glass marbles per gram. The weight of red and yellow stone and wooden marbles is the same. Calculate the difference in the total weight of only the glass red marbles and the glass yellow marbles. Show your work in <think> </think> tags. And return the final answer in <answer> </answer> tags.<|im_end|>
<|im_start|>assistant
Let me solve this step by step.
<think>
user
120
There are 19 marbles of varying sizes, weights, and types in a bowl. Out of these marbles, 5 are yellow glass marbles, and the remainder are blue and red marbles in the ratio 3:4 respectively. The types of marbles are glass, stone, and wooden. Yellow glass marbles have a combined weight of 8 grams. The red glass marbles weigh twice as much as the yellow glass marbles per gram. The weight of red and yellow stone and wooden marbles is the same. Calculate the difference in the total weight of only the glass red marbles and the glass yellow marbles.
test