exam Maths Puzzle Numerical Ability

x+9=-2
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2

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exam Other Question

the sum of two numbers is 30. If their ratio is 2:3, what are the numbers? Suppose you see the two summer jobs advertised at the right. Let x= the amount of sales and y= money earned in a week.

cellular phone sales: y=150+0.2x
stereo sales: y=200+0