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A Man Reaches His Office 20 Min Late, If He Walks From His Home At 3 Km Per Hour And Reaches 30 Min Early If He Walks 4 Km Per Hour. How Far Is His Office From His House? |
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Answer» LET distance = x km. TIME taken at 3 KMPH : dist/speed = x/3 = 20 MIN LATE. time taken at 4 kmph : x/4 = 30 min earlier difference between time taken : 30-(-20) = 50 mins = 50/60 hours. x/3- x/4 = 50/60 x/12 = 5/6 x = 10 km. Let distance = x km. Time taken at 3 kmph : dist/speed = x/3 = 20 min late. time taken at 4 kmph : x/4 = 30 min earlier difference between time taken : 30-(-20) = 50 mins = 50/60 hours. x/3- x/4 = 50/60 x/12 = 5/6 x = 10 km. |
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