Question
Evaluate if possible $[3 \ 2 ]\left[\begin{array}{l}2 \\ 0\end{array}\right]$
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| No. of girls in a family | 2 | 1 | 0 |
| No. of families | 700 | 850 | 250 |
A model of an aeroplane is made to a scale of 1 : 400. Calculate :
the length, in m, of the aeroplane, if length of its model is 16 cm.