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Questions and Answers
What is the area of a circle with a circumference of $20 ext{m}$?
$25 ext{m}^2$
Solve the simultaneous equations: $2x + 3y = 8$ and $4x - y = 5$.
$x = 2, y = 1$
Convert $\frac{3}{7}$ to a percentage.
$42.857 ext{%}$
Calculate the mean of the following set of numbers: $6, 8, 12, 15, 20$.
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If an item costs $100 and the exchange rate is $1 to £0.75, how much would it cost in pounds?
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