Answer:

Step-by-step explanation:
Given
Age 11 Age 12 Total
Girls 3 5 8
Boys 1 3 4
Required

The number of aged 12 children is:


The total number of children is:

So, we have:


Simplify

Answer:
7 classmates
Step-by-step explanation:
The last person in the line is in position 35.
The Maria's leading classmate is in the position 35-23+1 = 13.
So, Maria's classmates are from position 13 to 19 (not including herself), and their number is 19-12 = 7 persons.
ANSWER. Maria has 7 classmates (not including herself).
Hope this helps.
System c, plan out a variable system as the first buy, is 5 peaches and two watermelons, totaling to 7.75$, then the second buy is 3 watermelons and 4 peaches, totaling to 10.95$, system c is the only system that matches up
Answer:
13
Step-by-step explanation: