He made 4 round trips to visit his grandmother.
Amount of time he spent to get to his grandmother’s = 35 minutes and extra 4-minute walk (and can be expressed as 35 + 4)
= 35 + 4
= 39
To complete a round trip, the amount of time he spent to his grandmother’s will be multiply by 2
Therefore,
= 39 x 2
= 78
Total amount of time of a round trip = 78
Amount of time he spent on a trip to her apartment and back home = 5 hours and 12 minutes
To determine that, 5 hours will be added to 12 minutes
Therefore,
Since 1 hour = 60,
Then, (5 x 60) +12
= (5 x 60) + 12
= 300 + 12
= 312
Amount of time he spent on a trip to her apartment and back home = 312
To determine how many round trip he made, the amount of time he spent on a trip to her apartment and back home (312) will be divided by the total amount of time of a round trip (78) i.e. 312 ÷ 78
= 312 ÷ 78
=
= 4
Therefore Juwan made a total of 4 round trips to his grandmother’s place.
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