math
posted by Kel on .
eric has a baseball card collection in 3 albums. the smalles number of cards in an album was 54. the greatest number of cards was 72. what is the total number of cards eric has in his collection

He has somewhere between 180 and 198. Here's why.
He has 3 albums. You know one album has 54. You know the other album as 72.
54+72 = 126
Now, we also know he has one more albume. The album has anywhere between 54 cards and 72 cards in it.
126 + 54 = 180
126 + 72 = 198
The 3rd album can't have 53, 52, 51, 50, 49...etc. cards in it and it can't have 73, 74, 75, etc. cards in it.
So, total, you can have 181, 182, 183, 184....198 cards in it.
So it's somewhere between 182 and 198. But we don't know the exact amount. We only know it is within that range.
Matt