When your not sure if the fraction is the same
5a+b = 5(6)+3 =3
10-r+5 = 10-(9)+5 =6
Answer:
$3.65/gallon APEX
Step-by-step explanation:
It would be the girls because 7 divided into 21 equally is 3. So there will be 7 groups of 3 girls.
First find the numbers that are divisible by 3.
3, 6, 9, 12, 15, 18, 21, 24
There are 8 numbers divisible by 3 so there are 16 that are not divisible by 3.
P(not div by 3) = 16/24 = 2/3
