Answer:
a) [tex]\frac{3}{5}[/tex]
b) [tex]\frac{2}{5}[/tex]
c) [tex]\frac{89}{149}[/tex]
Step-by-step explanation:
a) [tex]\frac{90}{150} = \frac{9}{15} = \frac{3}{5}[/tex]
b) [tex]\frac{60}{150} = \frac{6}{15} = \frac{2}{5}[/tex]
c) The girl that raised her hand before must be removed from the total number of girls AND the total number of students. This makes the number of girls 90 - 1 = 89 and the number of students 150 - 1 = 149.
[tex]\frac{89}{149}[/tex] cannot be simplified.
