exam Maths Puzzle Numerical Ability

it takes a barge 1 hour to travel 8 miles downstream with the current and 4 hours to return against the current. Find the speed of the barge in still water and the speed of the cur

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Can you please help me solve the following problem:

For the given polynomial P(x) and the given c, use the remainder theorem to find P(c).

P(x) = x^2 + 12x + 31; -5

Than A large grain silo is to be constructed in the shape of a circular cyclinder with a hemisphere attached to the top. The diameter of the silo is to be 30 feet, but the height is yet