exam Maths Puzzle Numerical Ability

A tire company wants to determine how quickly the tread on its tires wears down with average use. Let x represent the number of months the tire was used. Let y represent the thickn

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a ramp in a multistory car park is 62 feet long and rises 11 feet. estimate the angle that the ramp makes with the horizontal.
please help me figure this out.
i dont know how.
thanks a lot! a messenger left a construction site and traveled by jeep at 51 km/h. Forty minutes later it was discovered that she had been given the wrong parcel. How fast must a second messenger travel to overtake her in one hour