Question
In one store, the ratio of DVDs to videos is 7:5. In another store, the ratio of DVDs to videos is 4:3. Explain why you cannot say which store has more DVDs.
Answers
oobleck
compare 7:5 to 40:30
or, 70:50 to 4:3
the size of the ratio says nothing about the total quantities
or, 70:50 to 4:3
the size of the ratio says nothing about the total quantities