alleryA cyclist rides 20 km at 10 km/h, then 40 km at 20 km/h. Total time?
A3 hours
B6 hours
C5 hours
D4 hours
Answer & Solution
Correct answer: D. 4 hours
The two stages take 20 ÷ 10 = 2 hours and 40 ÷ 20 = 2 hours, totalling 4 hours.
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