let the speed of the slower bus be equal to x km/h
let the speed of the faster bus be equal to x+16 km/h
in one hour they are a further 2x+16 km apart
therefore after 5 hours they are 5(2x+16) = 10x + 80 km apart
10x + 80 = 880 km
10x = 800km
x = 80
x + 16 = 96
therefore, the speed of the slower bus is 80 km/h whereas the speed of the second bus is 96 km/h
