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2016-03-25T13:38:13+05:30

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 AS 10% =72
BY UNITARY METHOD
100%=?

10%=72
100%=?
CROSS MULTIPLICATION........
100*72=10*?
SO ?=100*72/10=720


SO 720 KM IS THE LENGTH OF JOURNEY
HOPE YOU MARK IT AS BRAINLIEST

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2016-03-25T13:40:29+05:30
Let the total distance be x ATQ X / 100 × 10 = 72 X/10 = 72 X= 720
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