Roopa is a marathon runner. She can run 2/5 km in 5 minutes . How many minutes will she take to cover a distance of 15/2 km with the same speed.
Answers
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Step-by-step explanation:
Given
2.5 km ——- 5 minutes, or
2.5 km ——— (5/60) hours or (1/12) hours
Ans:
Speed = D/T
S = 2.5 or (2 and 1/2) or (5/2) km / (1/12) hours
(5/2)*(12/1) = (60/2) = 30 km/h
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Method 2
Given
2.5 km in 5 minutes, or
In 5 minutes ------- 2.5 km
In 1 minute ------- (2.5/5) or (1/2) km
In 60 minutes ----- (1/2)*60, or 30 km
In 1 hour ----- 30 km
Speed is 30 kmph
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Answer:
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Step-by-step explanation:
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