There are 16 children. Multiply 11 by 7 to get 77 and then add the 3. So that becomes 80. That was to find the improper fraction. Now that you have 80/7 you have to get the same denominator as 10/14. Luckily it’s easy to get to 14 from 7 you just multiply by 2, but whatever you do to the top you do to the bottom. So now you have 80x2 & 7x2 which is equal to 160 & 14. So your new improper fraction is 160/14 now you divide that number by how many each kid gets. 160/14 divided by 10/14 and your answer is 16.
Okay. So you have the amount of take, and the tax rate. To find tax you multiply the amount (x) by the percent of tax in decimal form. So: .06x = $1,080 x = $18,000