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Bike > ________300km_________< Van
20km/h 80km/h
In one hour, the bike will have moved 20km and the van would have moved 80km.
The distance between them was 300km. But the bike moved 20km and the van moved 80km, since its been one hour. Which means the distance between them is less.
300km-(20km+80km) = 200km
So now the distance between them is 200km.
Now another hour passes. The distance between them was 200km. But the bike moved 20km and the van moved 80km, since its been one hour. Which means the distance between them is less.
200km-(20km+80km) = 100km
So now the distance between them is 100km
Now another hour passes. The distance between them was 100km. But the bike moved 20km and the van moved 80km, since its been one hour. Which means the distance between them is less.
100km-(20km+80km) = 0km
So now the distance between them is 0km, which means they have met. If we count, it took them 3 hours.
:
Step 1)
Add both speeds. 20km+80km=100km
Step 2)
Total distance between them = 300km
So do 300km/100km = 3hours.
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The solution is: .
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Hope this helped!
