Linda97 Linda97

31-03-2016
Mathematics

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

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31-03-2016

60seconds=1 minute
60 mins=1hour

add them
add seconds to seconds, minutes to minute, hous to hours,
first do seconds

sec
30+53=83=60+23=1 minute and 23 seconds
add this 1 minute to the minutes

min
1+52+27+49+13=142=60+60+22=1 hour+ 1 hour+22 mins=2 hours+22 mins
add 2 to the hours

hours
2+4=6

6 hour
22 mins
23 seconds

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