Amelia earns a gross annual salary of $\$34500$$34500. She wants to put aside equal monthly amounts towards starting her own business. If she must pay income tax of $24%$24% and other expenses adding up to $\$19650$$19650 per annum, how much does she have left to set aside each month? Give your answer correct to the nearest cent.
For a gross income of $\$52000$$52000, calculate the net income when:
Bill earns $\$843.50$$843.50 per week and has the following deductions from his gross wage: Tax $\$253.05$$253.05, superannuation $\$85$$85 and union fees $\$25.61$$25.61.
Christa earns $\$2563.65$$2563.65 every two weeks and has the following deductions from her gross wage: tax at $\$559.17$$559.17, superannuation at $\$79$$79 and union fees at $\$22.47$$22.47.