it took ms clayton 20 minutes to drive from l'amoreaux collegiate institute to the university of toronto (a distance of 22 km). she used a combination of local and highway roads. when she was on the local road, she drove at 60 km/h, and 100km/h when she was on the highway. how much time did she drive on each road?
1 answer:
Ms Clayton drove on local road for 17 minutes a nd highway for 3 minutes
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Speed </h3>
Speed is the ratio of total distance travelled to total time t aken. It is given by:
Speed = distance / time
At 60 km/h:
60 = d₁ / t₁
d₁ = 60t₁
At 100 km/h:
100 = d₂ / t₂
d₂ = 100t₂
d₁ + d₂ = 22
60t₁ + 100t₂ = 22 (1)
Also, total time is 20 min (20/60 = 0.33):
t₁ + t₂ = 0.333 (2)
t₁ = 0.283 h = 17 minutes , t₂ = 0.05 h = 3 minutes
Ms Clayton drove on local road for 17 minutes a nd highway for 3 minutes
Find out more on Speed at: brainly.com/question/3004254
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