Step 1:
Percent is part of 100.
Step 2
First part:
60 units split into 80% and 20%
[tex]\begin{gathered} 80\text{ \% of 60 units = }\frac{80}{100}\text{ }\times60\text{ = 48} \\ 20\text{ \% = 12} \end{gathered}[/tex]
Second part
12 units = 40 %
[tex]\begin{gathered} 40\text{ \% = 12 units } \\ 60\text{ \% = }\frac{60\times12}{40}\text{ = 18 units} \end{gathered}[/tex]
Third part
30 % = 18 units
[tex]\begin{gathered} 30\text{ \% = 18 units} \\ 70\text{ \% = }\frac{18\text{ }\times\text{ 70}}{30}\text{ = 42 units} \end{gathered}[/tex]
Fourth part
75 % = 42 units
[tex]\begin{gathered} 75\text{ \% = 42 units} \\ 25\text{ \% = }\frac{25\text{ }\times\text{ 42}}{75}\text{ = 14 units} \end{gathered}[/tex]
Final answer
14 + 42 = 56 units
The length of the bottom diagram = 56 units
