alleryOn a 60 km trip, how much time is saved by using 30 instead of 20 km/h?
A2 hours
B1/4 hour
C1 hour
D1/2 hour
Answer & Solution
Correct answer: C. 1 hour
The travel times are 60 ÷ 20 = 3 hours and 60 ÷ 30 = 2 hours, saving 1 hour.
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