Answer:
140km/hr
Explanation:
This is a simple converstion.
We know that the bus travels 350km/150min.
We want to know the speed in km/h. All we need to know is that per 1 hr there are 60 min.
350km/150min * 60min/1hr (we want to make sure that the value we are trying to eliminate, in this case the minute, is on the opposing side.)
(350*60)/150 = 21,000km/150hr
let's simplify to only per 1 hr.
21000/150 = 140
150/150 = 1
Therefore, the speed of the bus is 140km/hr
