Question

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.​

Answer 1

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

Answer 2

Answer:

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Step-by-step explanation:

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