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Answer:
x = 5 1/3 hours
Step-by-step explanation:
Let
x = number of hours Mia fills the pool
y = number of hours Lora fills the pool
x + y = 16
Lora fills the pool twice as fast as mia.
y = 2x
Substitute y =2x into the equation
x + y = 16
x + 2x = 16
3x = 16
x = 16/3
x = 5 1/3 hours
x = number of hours Mia fills the pool =5 1/3 hours