1.To find the unit price you divide the total money of each package into the number of balls:
3 tennis balls for $4.95
[tex]\frac{4.95}{3}=1.65[/tex]4 tennis balls for $6.00
[tex]\frac{6.00}{4}=1.5[/tex]3 tennis ball package = $1.65 per ball
4 tennis ball package = $1.50 per ball
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2.
[tex]\begin{gathered} 1.65\cdot24=39.60 \\ \\ 1.50\cdot24=36.00 \end{gathered}[/tex]3 tennis ball package = $39.60 for 24 balls
4 tennis ball package = $36.00 for 24 balls
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3.
[tex]39.60-36.00=3.60[/tex]The 4 tennis ball package is cheaper by $3.60
