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The sum of digits of a two digit number is 7. If the digits are reversed and the resulting number is decreased by 2, twice the original number is obtained, find the original no. OR A boat takes 5 hours to go 300 km down stream. It takes the same time to go 150 km upstream. Calculate, (i) the speed of the boat in still water. (ii) the speed of the stream. |
Answer» OR `:.` Speed of the BOAT in STILL water is 45km/hr. Speed of the STREAM is 15km/hr. |
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