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Maths Puzzle
Numerical Ability
If you have 80 cc of 25% alcohol. How can you lower it to 20% alcohol?
Same question but raise it 20%.
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book Other Question
If x - 2y over 3 equal y - 2x over 2, express x in terms of y hence evaluate 7x - 2y over 3x - y
A family plans to surround their pool with a patio of constant width. The pool has an area of 150 square feet. The dimensions of the pool with the patio will be 15 feet by 20 feet. Find the dimensions of the pool.
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