Answer:
He has 9.6 miles left to go
Step-by-step explanation:
Total distance between Johnny and his friends house=12.8 miles
Distance covered=(1/4)×12.8=3.2 miles
Total distance=distance covered+distance not covered
where;
Total distance=12.8 miles
Distance covered=3.2 miles
distance not covered=x
12.8=3.2+x
x=12.8-3.2
x=9.6 miles
He has 9.6 miles left to go
