tax reduction: $20.34
amount you're paid minus tax: $657.66
Answer:
1. 54
2. 5
Step-by-step explanation:
1. 18 x 3 = 54
2. 90/18 = 5
The sum of interior angels of a pentagon is 550
When you have ratios, and some unknowns, you can create complex fractions from them. Bring them to the same denominator, and solve for x.
Example - we have this proportion:
2-x
5-45
And we can change it into fraction:
\frac{2}{5}=\frac{x}{45}
\frac{2*9}{5*9}=\frac{x}{45}
\frac{18}{45}=\frac{x}{45}
18=x
In case of more complex fractions it may come in handy.
