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Vipul

· started a discussion

· 1 Months ago

short trick (Question: 232754.0 )

if speed increased to 7/5 times then time will decrease 2/7 times
2/7t=6+6, t=42
d=42/60*2.5

Question:
Starting from his house one day, a student walks at a speed of 2.5 km/hr and reaches his school 6 minutes late. Next day at the same time he increases his speed by 1km/hr and reaches the school 6 minutes early. How far is the school from his house?
Options:
A) 2 km
B)


\(1\cfrac{1}{2}\) km

C) 1 km
D)


\(1\cfrac{3}{4}\) km

Solution:

Ans: (d)

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