SOLUTION: IF A BOY WALKS AT A SPEED OF 4 KM/HR,HE REACHES HIS SCHOOL 10 MINUTES BEFORE THE SCHOOL TIME.IF HE WALKS 3 KM/HR HE REACHES THE SCHOOL 10 MINUTES LATE.FIND THE DISTANCE BETWEEN HIS

Question 319225: IF A BOY WALKS AT A SPEED OF 4 KM/HR,HE REACHES HIS SCHOOL 10 MINUTES BEFORE THE SCHOOL TIME.IF HE WALKS 3 KM/HR HE REACHES THE SCHOOL 10 MINUTES LATE.FIND THE DISTANCE BETWEEN HIS HOUSE AND HIS SCHOOL.
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
IF A BOY WALKS AT A SPEED OF 4 KM/HR,HE REACHES HIS SCHOOL 10 MINUTES BEFORE THE SCHOOL TIME.IF HE WALKS 3 KM/HR HE REACHES THE SCHOOL 10 MINUTES LATE.FIND THE DISTANCE BETWEEN HIS HOUSE AND HIS SCHOOL.
----------------------
To-school DATA:
distance = x km ; rate = 4 kph ; time = x/4 hrs
----
From school DATA:
distance = x km ; rate = 3 kph ; time = x/3 hrs
------------------
Note the time difference is 25 minutes.
------------------
Equation:
from time - to time = 25/60 hrs
---
x/3 - x/4 = 25/60
---
Multiply thru by 60 to get:
20x - 15x = 25
5x = 25
x = 5 km (distance from house to school)
=========================================
Cheers,
Stan H.
RELATED QUESTIONS
If a boy walks from his house to school at 4 km/h, he reaches the school 10 minutes... (answered by josgarithmetic,josmiceli)

a man walking with a speed of 5 km/hr reached his target 5 minutes late. if he walks at a (answered by ewatrrr)

if a child walks at 5 km/h from his house and reaches his school 3 minutes... (answered by checkley79)

a scooterist drives at a speed of 40 km/hr and reaches his destination 5 minutes late. If (answered by lwsshak3)

A person walks from one place to another place at a speed of 4km/hr.if he walks at a... (answered by Alan3354)

if ram walks from his house at 5km/h he reaches school 5 min early and if he walks 4... (answered by ptfile)

24. A boy walks a certain distance at 9 km/h. He finds that if he increases his speed by... (answered by ankor@dixie-net.com)

A boy walks a distance at 9 km/h. He finds that if he increases his speed by 1/3, he... (answered by TimothyLamb)

1. Ramesh walks at 5/6th of his usual speed and reaches school 4 minutes late. Find the... (answered by edjones,ankor@dixie-net.com)