exam Maths Puzzle Numerical Ability

Two cars leave towns 230 km apart at the same time, traveling directly toward one another. One car travels 15km per hr slower than the other. They pass one another 2 hours later. What are their speeds?

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exam Other Question

find the sum of the first 19 terms of the arithmetic series in which a1=2 and d=4.
thanks i hope you can help! Which of the following is a sixth order equations?
a. S(x)=x^5=x^6-2x+7
b. Q(x)=x^2+3^6
c. M(x)=(x^3)^3-12x+4
d. none of the above