Question 889123
first 9600 has no tax
next 10000 is taxed at 4% so full 10000 tax is 400.
next 5000 is taxed at 7% so full 5000 tax is 350.
add them all up and tax on the first 24600 is equal to 750.


for mister koh:


46000 - 24600 = 21400
21400 taxed at 12% equals a tax of 2568.
2568 + 750 = a total tax of 3318.


total tax for mister koh is 3318.


for mister chen:


total tax he paid is 4800.
take away 750 and his remaining tax is 4050.
this is the amount that was taxed at 12%.
divide 4050 by 12% and you get 33750.
add 24600 to that and you get 58350


total income for mister chen is 58350.