Domik weights 30 pounds more than his sister
Together they weigh 330 pounds
Let "x" represent the weight of Dominik's sister, then his weight can be expressed as "x+30"
And their total weight can be calculated as:
![x+(x+30)=330](https://tex.z-dn.net/?f=x%2B%28x%2B30%29%3D330)
From this expression you can calculate the value of x:
![\begin{gathered} 2x+30=330 \\ 2x+30-30=330-30 \\ 2x=300 \\ \frac{2x}{2}=\frac{300}{2} \\ x=150 \end{gathered}](https://tex.z-dn.net/?f=%5Cbegin%7Bgathered%7D%202x%2B30%3D330%20%5C%5C%202x%2B30-30%3D330-30%20%5C%5C%202x%3D300%20%5C%5C%20%5Cfrac%7B2x%7D%7B2%7D%3D%5Cfrac%7B300%7D%7B2%7D%20%5C%5C%20x%3D150%20%5Cend%7Bgathered%7D)
x=150 pounds
x+30=150+30=180 pounds
Dominik weights 180pounds and his sister 150 pounds
Answer: 6.1
Step-by-step explanation:
Answer:
81.25%
Step-by-step explanation:
Given: There are 325 students who drive to school.
There are 400 students that ride the bus to school.
Now, finding percentage of the number of student who drive to school over number of students who ride the bus to school.
Percentage of student who drive to school= ![\frac{325}{400} \times 100](https://tex.z-dn.net/?f=%5Cfrac%7B325%7D%7B400%7D%20%5Ctimes%20100)
⇒ Percentage of student who drive to school= ![\frac{325}{4}](https://tex.z-dn.net/?f=%5Cfrac%7B325%7D%7B4%7D)
⇒ Percentage of student who drive to school= ![81.25\%](https://tex.z-dn.net/?f=81.25%5C%25)
Hence, 81.25% is the percent of students who drive to school on the number of students who ride the bus to school.