# Two dogs

Izzy's dog is 10 1/2 years old. Paige's dog is 18 months old. How many years older is Izzy's dog?

Result

d =  9

#### Solution:

$I=10 + \dfrac{ 1 }{ 2 }=\dfrac{ 21 }{ 2 }=10.5 \ \text{y} \ \\ P=18/12=\dfrac{ 3 }{ 2 }=1.5 \ \text{y} \ \\ \ \\ d=I - P=10.5 - 1.5=9$

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