She gets home at 4:10
Since Kimmy leaves her house at 10 minutes to 2:00 to meet her friends, this means that she left 2:00 - 0:10 = 1:50
Now, she returns home after 2 hours and 20 minutes. This implies that 2 hours and 20 minutes elapsed after she left home at 1:50.
So, adding 2:20 to 1:50, we have
1:50 + 2:20 = 3:70
Since 60 minutes equals 1 hour, we have
3:(60 + 10) = (3 + 1):10
= 4:10
So, she gets home at 4:10
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