book Maths Puzzle Numerical Ability

can you please help with this question...

Joseph is 4 years older than twice his sisters age. In 4 years time he will be 11 years older than here. How old is Joseph now

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book Other Question

The total length of a fence along the front and one side of a rectangular city lot is 480 feet. If the front fence is twice as long as the side fence, how many feet long is the sid factor: 14x^2+2