One year it snowed a total of 20 inches in January and february and it snowed three times as many inches in January than in February how much did it snow each month?

It snowed 15 inches in January and 5 inches in February.

If January has three times the snow as February, let F = snow in February

J + F = 20

3(F) + F = 20 inches

4F = 20

F = 5

J = 3F = 15