Solving Two Step Equations

Q. The sum of three consecutive numbers is 30. What are the numbers?

1. $8$
2. $9$
3. $10$
4. $11$

Q. A group of 31 students made the school trip. There were five buses and a car and the car was filled with 7 students. How many students were on each bus?

1. $4$
2. $3$
3. $5$
4. $8$

Q.

The angles of a triangle are in the ratio $1:2:3$. What are the measures of the angles of the triangle? What special name can you give to this triangle?

Q. You decide to redecorate a wall by hanging two new posters on it. The wall is 15 feet wide and each poster is 3 feet wide. You want to place the posters on the wall so that the distance from the edge of each poster to the nearest edge of the wall is the same as the distance between the posters, as shown in the diagram below. Then the distance = feet.

Q.

Yazmin decide to get some exercise by taking the stairs from the first to the fifth floor in her apartment building. The first time she went up the entire flight, she walked up some steps and ran up $16$ steps. This took a total of $60$ seconds. The second time she went up the entire flight, she walked up some steps and ran up $28$ steps. This took a total of $42$ seconds. How long would Yazmin take if she walked up the entire flight of steps $?$ (Assume constant rate for walking and running.)

Q. Solve the two-step equation below:
$3x+5=23$

1. $x=6$
2. $x=3$
3. $x=5$
4. $x=9$