exam Maths Puzzle Numerical Ability

Science and medicine. A passenger train can travel 325 mi in the same time a freight train takes to travel 200 mi. If the speed of the passenger train is 25 mi/h faster than the speed of the freight train, find the speed of each.

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exam Other Question

Find the greatest common factor (GCF) for each group monomial.

16x (2) z, 40 x z(2), 72z(3)
solve the inequality

x^4-10x^2<-9