Final answer:
The difference between the ratios in question involves the comparison of segment lengths and their relations to other segments.
Step-by-step explanation:
The ratio MN:NP compares the length of segment MN to the length of segment NP. For example, if MN is 3 units long and NP is 6 units long, the ratio would be 3:6 or simplified as 1:2.
On the other hand, the ratio MN:MPP compares the length of segment MN to the sum of the lengths of segments MN and PP. So if MN is 3 units long and PP is 2 units long, the ratio would be 3:5 or simplified as 3:5.
In summary, the first ratio compares the length of MN to the length of NP, while the second ratio compares the length of MN to the sum of the lengths of MN and PP.