Given:
Number of tomato plants = 48
Last measured height of all plants = 240 inches
Current average height per plant = 8 inches
Solution
The total height of all plants currently:
[tex]\begin{gathered} =\text{ 48 }\times\text{ 8 } \\ =\text{ 384 inches} \end{gathered}[/tex]
The difference between the current total height and previous height:
[tex]\begin{gathered} =\text{ 384 - 240 } \\ =\text{ 144} \end{gathered}[/tex]
Percentage of growth for the entire group of plants can be calculated using the formula:
[tex]=\text{ }\frac{Current\text{ - Previous }}{\text{Previous}}\text{ }\times\text{ 100\%}[/tex]
Substituting and simplifying we have:
[tex]\begin{gathered} \text{Percentage of growth = }\frac{Difference}{Previous\text{ }}\text{ }\times\text{ 100\%} \\ =\text{ }\frac{144}{240}\text{ }\times\text{ 100\%} \\ =\text{ 60\%} \end{gathered}[/tex]
Answer: Option C
