<human>:  There were 10 snowflakes at first. It snowed an additional 4 snowflakes every 5 minutes. How many minutes passed before there were 58 snowflakes?
<bot>: How additional snowflakes are needed? ** Without the first 10 snowflakes, there are 58-10=<<58-10=48>>48 snowflakes needed.
How additional 5-minute intervals are needed? ** 48/4=12 5-minute intervals are needed to get the additional snowflakes.
How many minutes passed before there were 58 snowflakes? ** 12*5=<<12*5=60>>60 minutes passed.
#### 60