52 minutes and 30 seconds + 27 minutes and 49 minutes + 4 hours and 13 minutes and 53 seconds + 4 hours and 44 minutes and 12 seconds equals

60seconds=1 minute

60 mins=1hour

add them

add seconds to seconds, minutes to minute, hous to hours,

first do seconds

sec

30+53+12=95=60+35=1 minute and 35 seconds

add this 1 minute to the minutes

min

1+52+27+49+13+44=186=60+60+60+6=1 hour + 1 hour+1 hour+6 mins=3 hours+6 mins

add 3 to the hours

hours

3+4+4=11

11 hour

6 mins

35 seconds

sam as other prlbme excep with 12 seconds, 44 mins, and 4 hours more