Question

If there are 1200 children, 3840 women and 4500 men in a city, then answer the following
12
questions:
What is the total number of people living in the city?​

Answer 1

First of all, it's a tricky question because Women and Men includes the Children, then we just got to sum Women + Men and we'll have the population of the city:

Sum the sets (Women & Men)

                                   $\large\begin{aligned}P &= 3840 + 4500\\\\P &= 8340\\\\\end{aligned}$

Therefore, the population is 8340.