Castel left the science museum and traveled toward the mountains. Sumalee left one hour later traveling 10 km/h faster in an eff
ort to catch up to him. After two hours Sumalee finally caught up. What was Castel's average speed? Show your work.
1 answer:
Castel's average speed from the science museum to mountains is 20 km/h
<h3>A
verage speed</h3>
Let x represent Castel' average speed.
Sumalee left one hour later and caught up with Castel after two hours, Let us assume the distance covered is d:
For Castel:
For Sumalee:
- x + 10 = d / 2
- d = 2x + 20
3x = 2x + 20
x = 20 km/h
Therefore Castel's average speed from the science museum to mountains is 20 km/h
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