Write the ratio as a fraction in simplest form.
35 to 105
22: 7
12 to 165

Nick and nora are married and have three children in college. they have an adjusted gross income of 47,400. if their standard deduction is 12,600 itemized deductions are 14,200 and they get an exemption of 4000 for each adult and each dependent what is their taxable income

How to do this , and can some one explain

You give a $4 tip for a meal that cost $22. approximately what percent of the bill was your tip?