5 liters of pure water is added to 20 liters of water containing 25% alcohol. Find the percentage of alcohol in the new mixture.
A wooden box of dimensions 8 m x 7 m x 6 m is to carry rectangularboxes of dimensions 8 cm x 7 cm x 6 cm. The maximum number ofboxes that can be carried in the wooden box, is : [ CDS 1992 ]
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