The following is part of a bus timetable from Galway to Limerick - Junior Cycle Mathematics - Question 5 - 2018

The bus leaves Oranmore at 07:28 and arrives in Limerick at 09:25. To find the duration:

• Calculate the time difference:

  09:25 - 07:28 = 1 hour 57 minutes.

Thus, the journey takes 1 hour and 57 minutes.

To find the fraction of an hour that 15 minutes represents, note that there are 60 minutes in an hour. Therefore,:

$\frac{15}{60} = \frac{1}{4}$

Thus, the answer is ( \frac{1}{4} ).

Gina drives a distance of 90 km in 1 hour and 15 minutes. Convert 1 hour and 15 minutes to hours: 1 hour + ( \frac{15}{60} ) hours = 1.25 hours.

Average speed is calculated as:

$Speed = \frac{distance}{time} = \frac{90 \text{ km}}{1.25 \text{ hours}} = 72 \text{ km/hour}$

Therefore, Gina's average speed for the journey is 72 km/hour.