Question

Mrs. Kula's class was going on a bus trip. They left the school at 9:30 am The bus trip to the zoo took 1 hour 15 minutes. They stayed at the zoo for 3 hours and then went to the park for 50 minutes before boarding the puses to return to school. At what time did they board the buses?

Answer 1

They left school at 9:30 am

The trip to the zoo took 1 hour 15 minutes

→ To determine the time they arrived at the zoo, add one hour and 15 minutes to the starting time

`\begin{gathered} 9h+1h=10h \\ 30\min +15\min =45\min \\ \to10\colon45 \end{gathered}`

They arrived at the Zoo at 10:45 am

Then they stayed at the Zoo for 3 hours and then went to the park.

→ To determine when they left for the park you have to add 3 hours to the time

Since three hours passed, leave the minutes aside and count the full hours, then add the minutes again

`10h+3h=13h`

Include the minutes and you get that they left the zoo at 13:45pm

They stayed in the park for 50 minutes before boarding the busses.

→To determine at what time they boarded the buses you have to add 50 minutes to the time.

To do so decompose the time into two, and work with the minutes.

Add 50 min to 45 min

`45\min +50\min =95\min`

Each hour has 60 minutes, since 95 is greater than 60 this means that it represents more than one hour, to know how many ore minutes it is subtract 60 from 95

`95\min -60\min =35\min`

So 95mins represent 1hour and 35 min

Add this time to 13:00pm

`13\colon00+1\colon35=14\colon35`

They started boarding the buses at 14:35pm