Leah earned $28 working odd jobs around the neighborhood. She spent a seventh of it on a milkshake and put half of the rest in her savings account. She left the remaining money in her wallet. Her dog got ahold of her wallet and shredded all the money inside but $1. How many dollars did Leah lose?
Leah spent 28 / 7 = $<<28/7=4>>4 on a milkshake.
She had 28 - 4 = $<<28-4=24>>24 left.
She put half in her savings account and half in her wallet, so she had 24 / 2 = $<<24/2=12>>12 in her wallet.
Her dog shredded all the money in her wallet but $1, so Leah lost 12 - 1 = $<<12-1=11>>11.
#### 11