# Question #91114

##### 1 Answer

Dec 21, 2016

#### Explanation:

Let distance from house be

Let correct time be

Time taken is found from the equation

- When walking at
#5kmph#

Let the person take time#t_1" which is "t+10/60=d/5#

#=>60t+10=12d# .......(1) - In the second case, speed is increased by
#1kmph# . Let the person take time#t_2#

#t_2" is "t-15/60=d/6#

#=>60t-15=10d# ......(2)

Subtracting equation (1) from (2) we get