15 lts of water containing 20% alcohol, then added 5 lts of
water. What is % alcohol.
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Answer Posted / techbots
15 ltrs water containing 20% alcohol means
say the water contents are X ltrs
then alcohol contents would be 0.2X ltrs
so X+ 0.2X = 15 ltrs
so X=1.25 ltrs
now add 5 ltrs of water so total volume will be 20 ltrs
so now the % is 1.25*100/20 = 6.25%
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