SOLUTION: jane runs three and a half km in 70 minutes . How long will it take her to run 9 km ?

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Question 888125: jane runs three and a half km in 70 minutes . How long will it take her to run 9 km ?
Answer by skartikey(21) About Me  (Show Source):
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since Jane runs three and a half km in 70 minutes
therefore, Jane would run 1 km in 70/3.5=20 minutes
so, Jane would run 9 km in 9*20=180 minutes or 3 hrs