125 gallons of a mixture contains 20% water. what amount of additional water should be added such that water content is raised to 25%?
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which of the following has recently hosted the opening ceremony of the 2018 Asian Games?

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The ratio of the speeds of a train and a man is 6:1. The length of the train is 650 m and crosses a pole in 1 minute 5 seconds. In how much time will the man cross the 240m long platform?

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