Question

Draw a sketch to help with this problem. From Tracey's house

to John's house is 0.5 kilometers. From John's house to school is 0.8
kilometer. Tracey rode from her house to John's house and then to
school. Later she rode from school to John's house to her house.
Altogether, how far did Tracey ride?

Answer 1

2.6 km

Explanation:

You want the total distance from Tracey's house to John's house to school, and back again, when the distance from Tracey's to John's is 0.5 km, and the distance from John's to school is 0.8 km.

Total

The total distance will be the sum of the parts:

• Tracey's to John's: 0.5 km
• John's to school: 0.8 km
• school to John's: 0.8 km
• John's to Tracey's: 0.5 km

Total distance = (0.5 +0.8 +0.8 +0.5) km = 2(0.5 +0.8) km = 2(1.3 km)

= 2.6 km

Tracey rode 2.6 km altogether.