Time Computation

Algebra Level pending

The time now is 38 38 minutes before 10 : 00 10:00 pm. What was the time 47 47 minutes ago?

8 : 55 8:55 pm 8 : 15 8:15 pm 9 : 31 9:31 pm 8 : 35 8:35 pm

Marvin Kalngan by Marvin Kalngan , 38, Philippines

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3 solutions

Time now ⟹ \implies 38 38 minutes before 10 : 00 10:00 pm = 9 : 22 =9:22 pm.

Time 47 47 minutes ago ⟹ \implies 47 47 minutes before 9 : 22 9:22 pm = 8 : 35 =\boxed{8:35} pm.

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Darsh Kedia
May 13, 2020

The time right now is 38 minutes before 10:00 PM. We want the time 47 minutes ago.

We can directly calculate the answer by subtracting ( 38 + 47 ) = 85 (38+47) = 85 minutes from 10:00 PM

85 minutes = 1 hour 25 minutes

1 hour 25 minutes before 10:00 PM = 25 minutes before 9:00 PM = 8 : 35 \boxed{8:35} PM

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38 38 minutes before 10 : 00 10:00 pm = 9 : 22 9:22 pm

9 : 22 9:22 pm − 7 - 7 minutes = 9 : 15 9:15 pm

9 : 15 9:15 pm − 15 - 15 minutes = 9 : 00 9:00 pm

9 : 00 9:00 pm − 25 - 25 minutes = 8 : 35 8:35 pm

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