book Maths Puzzle Numerical Ability

Wilma is thirteen years older than Beverly. In nine years, Wilma will be twice as old as Beverly. How old is Beverly?

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book Other Question

I am having trouble solving this inequality. Please help me. Thanks

-6 < 5y - (2y - 9) Find the coordinates of the midpoint of the line segment with endpoints of (-3,6) and (-1,-9)