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Maths Puzzle
On my sister's 15th birthday, she was 159 cm in height, having grown 6% since the year before. How tall was she the previous year?
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Book Other Question
Q as a percentage of P is equal to P as a percentage of (P + Q). Find Q as a percentage of P.
A pipe X is 30 meters and 45% longer than another pipe Y. find the length of the pipe Y.