Answer:
<u>274.6 inches</u> more snowfall Michigan received during the winter of 1978-79 than in 1930-31.
Step-by-step explanation:
Given:
The state of Michigan recorded an all time high snowfall of 355.9 inches during the winter of 1978-79.
Its lowest snowfall of 81.3 inches was recorded during the winter of 1930-31.
Now, to find how much more snowfall did Michigan received during the winter of 1978-79 than in 1930-31.
The snowfall in 1978-79 = 355.9 inches.
And, the snowfall in 1930-31 = 81.3 inches.
So, to get the how much more snowfall in 1978-79 than 1930-31 we subtract:
Snowfall in 1978-79 - Snowfall in 1930-31.

Therefore, 274.6 inches more snowfall Michigan received during the winter of 1978-79 than in 1930-31.