Answer:
6:38am
Step-by-step explanation:
From the question we are told that
Average speed 
Distance traveled 
Generally the velocity across a distance is mathematically given given as 


Therefore
7:20-42 minutes =6:38am
The absolute value of 10 Is 10
In both models, for every 2 yellow squares there is one white square so 2/3 is equal to 8/12