Matilda bought a smartphone for $300. Then she decided she wouldn't use it anyway and sold it for $255. What percentage of the initial cost did she lose? Let's think step by step and output the final answer after "####".
user
The difference between the initial cost and the amount she sold the phone for is $300-$255 = $<<300-255=45>>45
$45 is (($45/$300)*100)% = 15% of $300
#### 15
Matilda bought a smartphone for $300. Then she decided she wouldn't use it anyway and sold it for $255. What percentage of the initial cost did she lose?
train