exam Maths Puzzle Numerical Ability

time it takes to travel 180 miles upstream. the speed oof the current in the stream is 5.5 milies per hour. find the speed of the boat in still water.

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exam Other Question

Mr. Scrooge and Mr. Marner believed in saving money. At the end of 3 years, Mr.Scrooge had saved no less than two thirds what Mr.Marner had saved. If Mr. Marner saved $15.00 per weel, what is the least amount of money that Mr. Scrooge saved? A Spherical Tank with a radius .25m is filled with water (p=1000kg/m^3). Calculate the mass and weight of the water in SI units.