An employee , travelling at 20 km/h , reaches his office half -an -hour late than the time he would take while travelling at 25 km/h . Find the distance between his house and the office .
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Answer:
50km
Step-by-step explanation:
25×2=20×2+10
=50
as we need a common no. that is divisible by 25 and also divisible by 20 withe same divident + it's half that is 10
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