a person leaves his house and travels at 8 kmph to reach his office 6 min early . had he travelled at 5 kmph , he would have reached 9 min late . find the distance between his house and his office .
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Step-by-step explanation:
let the distance is x
x/8-x/5 = 15/60
8x-5x/40 = 1/4
8x-5x/10=1/1
ans = 10 kmph