two buses leave a terminal at the same time. bus a travels due to north at a constant rate while bus b travels due to west at the constant rate. after 2 hours, the two buses are 64km apart. if bus b travels 8km/h faster than bus a find the rate of the two buses.

1. the rate of bus a is;
a. 18.3km/h
b. 26.3km/h
c. 21.3km/h
d. 28.3km/h

2. the rate of bus b is;
a. 18.3km/h
b. 26.3km/h
c. 21.3km/h
d. 28.3km/h​