Answer: 
The length of the lizard is 187 inches 
Solution: 
It is given that Jeff’s beagle is 2 feet 6 inches long. 
Le the length of the longest lizard be x. 
We first convert 2 feet 6 inches into inches. 
We know, 
1 feet =12 inch 
2 feet = 12 
 2 = 24 inch 
2 feet 6 inches = 24 + 6 = 30 inches 
Similarly, 
13 feet = 13 
 12 = 156 inches. 
13 feet 1 inch = 156 +1 = 157 inches 
According to question the longest lizard is 13 feet 1 inch or 157 inch longer than Jeff’s beagle. 
Length of the lizard = 157 +30 = 187 inch