The table below shows income tax rates

Monthly income | Tax Rate |

(Kshs) | (%) |

Up to 9680 | 10 |

9681 – 18800 | 15 |

18801-27920 | 20 |

27921-37040 | 25 |

37041 and above | 30 |

Omari’s monthly taxable income is Ksh. 24200

- Calculate the tax charged on Omari’s monthly earnings.
- Omari is entitled to the following tax relief of 15% of the premium paid.

Calculate the tax Omari pays each month if he pays a monthly insurance premium of Ksh. 2400 - During a certain month, Omari received additional earnings which were taxed at 20% each shilling. Given that he paid 36.3% more tax that month, calculate the percentage increase in his earning.