Twenty - five inches of snow fell in January and February. Nine more inches fell in January than in February

Total snowfall = 25inches

february = f (since we don't know how much)

january snowfall = nine more than February = f + 9

We add January and February snowfall for the total

f +9 + f = 25

combine like terms

2f + 9 =25

subtract 9 from both sides

2f =16

f =8 inches for February

january was 9 more inches which makes 17 inches