A class has $30$ boys and $20$ girls. Find the percentage of the number of boys as compared with the number of girls.
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[1 Mark Question Answer]
34 Q→02[2 Mark Question Answer]
16 Q→03[3 marks sum]
29 Q→04[4 marks sum]
10 Q→05[5 marks sum]
2 Q→One sample from each question group in this chapter. Select any group above to see the full set with answer keys.
| Contents of air | Percentage (by volume) |
| Nitrogen | $78$ |
| Oxygen | $21$ |
| Other (carbon dioxide, inert gases, water vapours, etc.) | $1$ |
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