exam Maths Puzzle Numerical Ability

A car travels at 40 km/h 30 minutes and 60 km/h for 15 minutes. How far does it travel in this time?

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exam Other Question

Find the domain of the rational function.

g(x)=6x/(x-1)(x+7)
mary and sue are 30 miles apart. if they leave at the same time andride in the same direction, mary overtakes sue in 6 hours. if they ride towards each other they pass each other in 1 hour. what are their speeds?