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QA person walking at 4 kilometres per hour arrives at his office 8 minutes late. He gets there 8 minutes faster if he walks at 6 Kmph. How far away is his office from his home?

ID: #4696 Time and Distance 221 views

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#4696Q ID

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Time and DistanceTopic

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A 3 1/5 Km ✔ ✖
B 2 1/5 Km ✔ ✖
C 4 1/5 Km ✔ ✖
D 5 1/5 Km ✔ ✖

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Explanation


Distance = speed * time

For the first object:
Distance = S1 * T1 = 4 km/hr * 16/60 hr = 4/15 km = 2/7.5 km = 0.26666666666666666 km

For the second object:
Distance = S2 * T2 = 6 km/hr * 6/60 hr = 6/10 km = 3/5 km = 0.6 km

Total distance traveled = distance traveled by first object + distance traveled by second object = 0.26666666666666666 km + 0.6 km = 0.8666666666666667 km = 3 1/5 km.

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QA person walking at 4 kilometres per hour arrives at his office 8 minutes late. He gets there 8 minutes faster if he walks at 6 Kmph. How far away is his office from his home?

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