To find out how many apples (a) there must be to equal a total weight of 32 ounces when substituting 4 plums (p = 4) into the equation \(5a + 2p = 32\), start by substituting 4 for \(p\):
\[ 5a + 2(4) = 32 \]
Next, calculate \(2(4)\):
\[ 2(4) = 8 \]
Now substitute this value back into the equation:
\[ 5a + 8 = 32 \]
To isolate \(5a\), subtract 8 from both sides:
\[ 5a = 32 - 8 \]
Calculating \(32 - 8\):
\[ 5a = 24 \]
Next, divide both sides by 5 to solve for \(a\):
\[ a = \frac{24}{5} \]
Calculating the division gives:
\[ a = 4.8 \]
Therefore, to equal a total weight of 32 ounces with 4 plums, there must be 4.8 apples.
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