alleryA speed of 60 km/h is held steady. How far does the car go in 2.5 hours?
A150 km
B120 km
C62.5 km
D24 km
Answer & Solution
Correct answer: A. 150 km
1. Distance is directly proportional to time at constant speed.
2. The constant of proportionality is the speed, 60 km/h.
3. Distance = 60 x 2.5 = 150 km.
_Source: Wikipedia, Proportionality (mathematics), Examples_
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