exam Maths Puzzle Numerical Ability

(2x-6)/21 divided by (5x-15)/12

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exam Other Question

Kevin earned $165 interest for 1 year on an investment of $1500. At the same rate, what amount of interest would be earned by an investment of $2500.?
Find the slope of any line perpindicular to the line through points (0,5) and
(-3,-4)