Reversing the steps to obtain the amount she spent at the supermarket, $50 less than $350 is $350-$50 = $<<350-50=300>>300

If $300 was thrice the amount she spent at the supermarket, then the amount spent at the supermarket was $300/3 = $<<300/3=100>>100

In addition to what she spent fixing her auto, she spent $100+$350 = $<<100+350=450>>450 altogether

# Answer

450
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Leila went to the supermarket to get some groceries. Then she headed to her mechanic to get her automobile fixed. If fixing her automobile cost $350 which was $50 more than thrice the amount she spent at the supermarket, how much has she spent altogether?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
450
Leila went to the supermarket to get some groceries. Then she headed to her mechanic to get her automobile fixed. If fixing her automobile cost $350 which was $50 more than thrice the amount she spent at the supermarket, how much has she spent altogether?
train