The answer is: "
48
" .
______________________________________________Note: 30 minutes is "1/2 h" = 0.5 h ;
As such:
"2 hours and 30 minutes: = 2 h + 0.5 h = 2.5 h " ;
______________________________________________So we have:
____________________120 km / 2.5 h ;
= (120 / 2.5) km / h = (1200/25) km/hr =
48
.
____________________________________________________