book Maths Puzzle Numerical Ability

Ruth bicycles 5km/h slower than bill. In the time that it takes Ruth to bicycle 42km, bill can bicycle 57km. How fast does each bicyclist travel?

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book Other Question

the hypotenuse of a right triangle measures 13 feet and one measures 5 feet. find the lenght of the other leg? For the rational function defined by f(x) = (2x 2 + x - 6)/(x - 1)
a) determine the equation of the oblique asymptote
b) determine the x-intercepts