She starts with $5.00 a week for 4 weeks so that’s 5*4 = $<<5*4=20.00>>20.00

Then she bumps it up to $10.00 a week for 4 weeks so that’s 10*4 = $<<10*4=40.00>>40.00

After that, she saves $20.00 a week for 4 weeks so that’s 20*4 = $<<20*4=80.00>>80.00

Over 12 weeks she has saved 20+40+80 = $<<20+40+80=140.00>>140.00

# Answer

140
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Sarah starts saving $5.00 a week for 4 weeks.  Then she saves $10.00 a week for the next 4 weeks.  Then she saves $20.00 a week for the next 4 weeks.  How much money has she saved over 12 weeks?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
140
Sarah starts saving $5.00 a week for 4 weeks.  Then she saves $10.00 a week for the next 4 weeks.  Then she saves $20.00 a week for the next 4 weeks.  How much money has she saved over 12 weeks?
train