N, at a speed of 20 km/h reaches his office 10 min late. Next time he – McqOptions

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1.	N, at a speed of 20 km/h reaches his office 10 min late. Next time he increases his speed by 5 km/h, but is still late by 4 min. What is the distance of office from his house?
A.	6 km
B.	20 km
C.	None of these
D.	12 km
Answer» D. 12 km

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