Answer:
$212.10
Explanation:
1 kilogram of pine nuts = $84.84
To find the cost for 2.5 kilograms, multiply 2.5 by $84.84.
[tex]\begin{gathered} \text{Cost of 2.5kg of pine nuts}=2.5\times84.84 \\ =(2+0.5)\times84.84 \\ =(2\times84.84)+(0.5\times84.84) \\ =169.68+42.42 \\ =\$212.10 \end{gathered}[/tex]Ellen will have to pay $212.10