Answer:
9.6 km
Step-by-step explanation:
The last third of the trip is 3200 meters. The first two thirds can be calculated by multiplying that value with two:
[tex]d_{1}=3200*2\\d_{1}=6400m[/tex]
The total distance is the sum of the two thirds and the last third of the trip:
[tex]d_{1} +d_{2}\\=6400+3200\\=9600m[/tex]
To convert the distance to kilometres, the value should be divided by 1000:
[tex]\frac{9600}{1000}=9.6km[/tex]
