If x = 2y = 3z = 36 then the arithmetic mean of x, y, z is :

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Job Solution Mercantile Bank Ltd Mercantile Bank Ltd - Officer - 24.04.2009 গণিত
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A boat sails m miles upstream at the rate of r miles per hour. If the rate of the stream is s miles per hour, how long will it take the boat to return to its starting point?

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An ambulance travels 10 miles at a speed of 75 mi,es per hour. How fast must the ambulance travel on the return trip if the round-trip travel time is to be 20 minutes?

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