CAPE Applied Mathematics Unit 1 · 2014 · Paper 1 · Question Q8
The mean of the positive numbers x_1, x_2, x_3 is \bar{x}, and the mean of the positive numbers y_1, y_2, y_3 is \bar{y}.
The mean of the numbers x_1, x_2, x_3, y_1, y_2 and y_3 is
- (A)
\left(\frac{\bar{x} + \bar{y}}{3}\right) - (B)
\left(\frac{\bar{x} + \bar{y}}{2}\right) - (C)
\bar{x} + \bar{y} - (D)
2(\bar{x} + \bar{y})
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