Emma is spending the weekend visiting an old school friend.
Emma drives 180 miles to her friend’s house.
- 1/6 of the journey is at 30mph
- 50% of the journey is at 60mph
- The rest of the journey takes 1 hour
- Emma leaves at 9:20am
Work out the earliest time Emma could arrive at her friend’s house.
Answer:
Distances:
1/6 x 180 = 30 miles, 50% = 90 miles
Remaining:
180 – 90 – 30 = 60
Times:
30/30 = 1 hour, 90/60 = 1.5 hours +1 hour
Total time:
1 + 1.5 + 1 = 3.5 hours
The earliest Emma could arrive would be 12:50pm.