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Question
Mary cycles at 6 km per hour. How long will she take to reach her Aunt’s house which is 12 km away? If she cycles at a speed of 4 km/hr, how long would she take?
Solution
Given,
Case 1:
Speed = 6 km/hr
Distance = 12 km
∴ Time = `"Distance"/"speed"`
= `12/6`
= 2 hours
Case 2:
Speed = 4 km/hr
Distance = 12 km
∴ Time = `"Distance"/"Speed"`
= `12/4`
= 3 hours
Hence, if the speed of cycle is 6 km/hr then, Marry will take 2 hours and if the speed of cycle is 4 km/hr then, she will take 3 hours to reach her Aunt’s house.
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