exam Maths Puzzle Numerical Ability

how do ou do this problem.....

1 1
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x y
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1+ 1
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x

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exam Other Question

Write 3 equations equivalent to 6x=10 and one that is non equivalent.
we came up with x=1.6- Business and Finance. 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?