Answer:
40%
Step-by-step explanation:
18÷45 = 0.4 × 100 = 40%
27
To find out how many people do something OTHER than running, you have to take the total amount of students participating and subtract the number of runners. 45 - 18 = 27.
x = 25°
2x-10°+2x-10°+100°=180°[sum of angles in a triangle ]
4x+80°=180°
4x=100°
x=25°
22 cupcakes
13+15=28
50-28=22