24% of the people at a shopping mall are men. The number of boys is 3/8 of the number of men. The number of women is 4 times the number of boys. The number of girls is 504 more than the number of men. How many males are there in the shopping mall?(please answer in a specific primary 5 way as my nephew is primary5)
24% of the people at a shopping mall are men. The number of boys is 3/8 of the number of men. The number of women is 4 times the number of boys. The number of girls is 504 more than the number of men. How many males are there in the shopping mall?
x are the number of all people.
m = men, b = boys, w = women, g = girls
$$\small{
\begin{array}{rcl}
m&=& 0,24x\\\\
b&=& \dfrac{3}{8}m \\
w &=& 4\cdot b = 4\cdot \dfrac{3}{8}m = \dfrac{3}{2}m\\
g &=& 504 + m\\\\
x &=& m+b+w+g\\\\
x &=& m + \dfrac{3}{8}m+\dfrac{3}{2}m+504 + m\\\\
x &=& 2m+ \dfrac{3}{8}m+\dfrac{3}{2}m+504 \\\\
x &=& \dfrac{16+3+12}{8}m+504\\\\
x &=& \dfrac{31}{8}m+504\\\\
x &=& \dfrac{31}{8}\cdot 0.24x+504\\\\
x &=& 31\cdot 0.03x+504\\\\
x &=& 0.93x+504\\\\
x- 0.93x &=&504\\\\
0.07x &=&504\\\\
x &=& \dfrac{504\cdot 100}{7}\\\\
x &=& 7200\\\\
m &=& 0.24x\\
m &=& 0.24\cdot 7200 \\
\mathbf{m} & \mathbf{=} & \mathbf{1728}
\end{array}
}$$
There are 1728 males in the shopping mall
Boys = 648
Woman = 2592
Girls = 2232
24% of the people at a shopping mall are men. The number of boys is 3/8 of the number of men. The number of women is 4 times the number of boys. The number of girls is 504 more than the number of men. How many males are there in the shopping mall?
x are the number of all people.
m = men, b = boys, w = women, g = girls
$$\small{
\begin{array}{rcl}
m&=& 0,24x\\\\
b&=& \dfrac{3}{8}m \\
w &=& 4\cdot b = 4\cdot \dfrac{3}{8}m = \dfrac{3}{2}m\\
g &=& 504 + m\\\\
x &=& m+b+w+g\\\\
x &=& m + \dfrac{3}{8}m+\dfrac{3}{2}m+504 + m\\\\
x &=& 2m+ \dfrac{3}{8}m+\dfrac{3}{2}m+504 \\\\
x &=& \dfrac{16+3+12}{8}m+504\\\\
x &=& \dfrac{31}{8}m+504\\\\
x &=& \dfrac{31}{8}\cdot 0.24x+504\\\\
x &=& 31\cdot 0.03x+504\\\\
x &=& 0.93x+504\\\\
x- 0.93x &=&504\\\\
0.07x &=&504\\\\
x &=& \dfrac{504\cdot 100}{7}\\\\
x &=& 7200\\\\
m &=& 0.24x\\
m &=& 0.24\cdot 7200 \\
\mathbf{m} & \mathbf{=} & \mathbf{1728}
\end{array}
}$$
There are 1728 males in the shopping mall
Boys = 648
Woman = 2592
Girls = 2232
Let T be the total number of people......
The, the men = .24T .... The number of boys =(3/8)*.24T = .09T ..... The number of women = .36T and The number of girls = (1 - .24 - .09 - .36)T = .31T
And we know that
.24T + 504 = .31T subtract . 24T from both sides
.07T = 504 divide both sides by .07
T =504/.07 = 7200 = T = the total number of people
And the number of males = (.24 + .09)(7200) = .33(7200) = 2376
And the number of females is (.31 + .36)T = (.67)(7200) = 4824