exam Maths Puzzle Numerical Ability

To fly due north at 580 km/h with a 45 km/h blowing toward 130o, what speed and direction should the plane travel?

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exam Other Question

Simplify and evaluate
(x^3y^-4z^0/5x^6y^8)^3 How many liters of a solution containing 22% sugar and how many liters of another solution containing 31% sugar must be mixed together to make 680 liters of solution containing 27% sugar?