08/28/15
Travel by a slow and faster train to same destination
An express train takes 51/2 hours to travel between two cities. If the Express train takes only 3/5 of the time an ordinary train takes, how long will it take for the ordinary train to travel...
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08/14/15
5900 is invested part of it at 10% and part of it at 7% for a year, the total yield is 506. How much was invested at each rate?
5900 is invested part of it at 10% and part of it at 7% for a year, the total yield is 506. How much was invested at each rate?
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