SOLUTION: A student starting from his house walk at a speed of 2.5 km per hour and reaches his school 6 minute late. Next day at the same time he increases his speed by 1 km per hour and rea

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Question 995139: A student starting from his house walk at a speed of 2.5 km per hour and reaches his school 6 minute late. Next day at the same time he increases his speed by 1 km per hour and reaches 6 minute early. The distance between his school and house is?
A)3½ km
B)4 km
C)1¾ km
D)6 km
Found 2 solutions by josgarithmetic, MathTherapy:
Answer by josgarithmetic(39618)   (Show Source): You can put this solution on YOUR website!
t, time if arrival point is satisfied as normal time. 

                   speed     time        distance
Trip late          2.5       t+1/10       d
Trip early         3.5       t-1/10       d

The two unknowns in the system of equations are d and t.
Answer by MathTherapy(10552)   (Show Source): You can put this solution on YOUR website!

A student starting from his house walk at a speed of 2.5 km per hour and reaches his school 6 minute late. Next day at the same time he increases his speed by 1 km per hour and reaches 6 minute early. The distance between his school and house is?
A)3½ km
B)4 km
C)1¾ km
D)6 km
Duplicate.....see problem # 994570

Distance:  km 

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