Answer:
Step-by-step explanation:
Let the total number of votes to choose a color = x
Number of votes for blue = 
Remaining votes = x - 
= 
= 
Votes for green = 
= 
= 
Finally remaining votes = 
= 
= 
= 
Since these votes are for red therefore,
= 48
x = 48×6
= 288
a) Votes for blue are 
Therefore, exact number for blue votes = 
= 5×36
= 180
b). Votes for green = 
= 
= 60
c). Since 25 students were absent on that day of the vote, number of students at Riverside Elementary School = 288 + 25
= 313
d). Since seven tenths of the votes for blue were made by the girls.
Therefore, number of girls voted for blue = 
= 7×18
= 126
Since total votes made = 288
Therefore, half of the votes made = 
= 144
Now it's clear that number of votes made by girls is less than half of all the votes.
e). 126 girls voted for blue.