A container full of water weight 5 kg. If one –fourth of the container is full of water, it weighs 5 kg. What is the weight of the empty container?
সমাধান
সঠিক উত্তর: Option A
here, water +container= 18.5 .25water+container=6.5 kg so, .75 water =12 kg so , full weight of water =12/.75=16 kg so, empty container= 18.5-16.00=2.5 meter