Answer:
Step-by-step explanation:
You want to know the numbers of males and females in a class if their total is 29 and there are 13 more males.
Setup
Let m and f represent the numbers of males and females, respectively. The problem statement tells us ...
m + f = 29
m - f = 13
Solution
Adding the two equations gives ...
2m = 42
m = 42/2 = 21
f = 21 -13 = 8
There are 21 males and 8 females in the biology class.
