Answer:
There are 3 4/5 lbs left
Step-by-step explanation:
The first step is to figure out how much food the dog ate in 2 months
10 2/5
+ 10 4/5
--------------
20 6/5
Reduce 6/5 = 1 1/5
20 6/5 = 20 + 1 1/5 = 21 1/5
The dog at 21 1/5 lbs of food
There were 25 lbs of food, so we need to subtract to see how much was left
25
- 21 1/5
-------------
We have to borrow 1 from the 25. Make that 1 5/5 so the denominator is the same
24 5/5
- 21 1/5
----------------
3 4/5
There are 3 4/5 lbs left
