I shall be 40 min late to reach my office if I walk from my house at 3 km/hr. I shall be 30 min early if I walk at 4
km/hr. Find the distance between my house and the office.
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Answer:
the distance between my house and the office.
= 14 km
Step-by-step explanation:
Let the distance between the office and his house be X
the the time taken to reach the office at speed of 3km/hr
= X / 3 hours
the the time taken to reach the office at speed of 4km/hr
= X / 4 hours
the difference between reaching time is 40 + 30 =70 minutes = 7/6 hours
X /3 - X/4 = 7/6
4X - 3X = 14
X = 14 km
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