<human>:  In mid-May, the river flowing through Moreland is five feet deep. By mid-June, the river is 10 feet deeper than mid-May. By mid-July, the river is three times deeper than mid-June. How many feet deep is the river by mid-July?
<bot>: How deep is the river in mid-June? ** In mid-June, the river is 5+10=<<5+10=15>>15 feet deep.
How deep is the river in mid-July? ** In mid-July, the river is 15*3=<<15*3=45>>45 feet deep.
#### 45