Answer:
The number of hours did Sarah practice more than Leilani is 
 hours .
 hours . 
Explanation:
Given as :
The time for which Leilani practiced piano = 
 hours
 hours
The time for which Sarah practiced piano = 
 hours
 hours
Let the number of hours did Sarah practice more than Leilani = T hours
Now, According to question
The number of hours did Sarah practice more than Leilani = 
 hours -
 hours - 
 hours
 hours
Or, T = 
 hours
 hours
Or, T = 
 hours
 hours
So,The number of hours did Sarah practice more than Leilani = T = 
 hours
 hours
Hence, The number of hours did Sarah practice more than Leilani is 
 hours . Answer
 hours . Answer