In the science class,
there are 3 girls and 1 boy (grade 7)
and 5 girls and 5 boys (grade 8)
There is a total of 14 pupils being 8 girls and 6 boys
The probability of choosing a boy will be

Which can be simplified into

by
dividing 2 from the numerator as well as the denominator.
Answer:
1980
Step-by-step explanation:
It’s right, trust me
Answer:
40
Step-by-step explanation:
36-16 = 20
20*2=40
Lets check - half comic books - 40/2= 20 + 16 more = 36
The ratio of used books to new books is 9:4 because 13-4=9 and the ratio of all books to used books is 13:4 because there are 13 total books and 4 used books