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### Question 1

Calculate the following percentages.

(a) | 10% of 420 | (b) | 20% of 120 | (c) | 5% of 68 |

(d) | 60% of 50 | (e) | 40% of 210 | (f) | 120% of 450 |

(g) | 30% of 80 | (h) | 2.5% of 180 | (i) | 15% of 640 |

(j) | 35% of 60 | (k) | 7.5% of 480 | (l) | 45% of 360 |