6.988.880km = 4342668.7 miles
3rd is the answer for your question
Answer:
The original number is 90.8
Step-by-step explanation:
we know that
![100\%+9\%=109\%=109/100=1.09](https://tex.z-dn.net/?f=100%5C%25%2B9%5C%25%3D109%5C%25%3D109%2F100%3D1.09)
Let
x -----> the original number
The original number multiplied by 1.09 must be equal to 99
so
![1.09x=99](https://tex.z-dn.net/?f=1.09x%3D99)
Solve the linear equation for x
Divide by 1.09 both sides
![x=99/1.09](https://tex.z-dn.net/?f=x%3D99%2F1.09)
![x=90.8](https://tex.z-dn.net/?f=x%3D90.8)