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Maths Puzzle
Numerical Ability
A carpet has the dimensions X feet by (X + 2)feet. If its area is 224 square feet, what are the dimensions of the carpet?
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book Other Question
A bacteria culture has and initial population 10000. If its population declines to 3000 in 2hrs, what will it be at the end of 4 hrs?
solve.
13 - x/2 = x - 1/2