Answer: well this is pretty simple Trevon sold 1 package of chocolate chip cookie dough and 1 package of sugar cookie dough for a total of $12. What’s 6+6? 12.
And dan sold 5 packages of chocolate chip cookie dough and 8 packages of sugar cookie dough for a total of $84 so what is 5x6? 30 and what’s 8x6? 48 now what’s 30+48? 78 and what’s 78+6? 84. There’s your answer, the cost of one package of chocolate chip cookie dough and one package of sugar cookie dough is $6
I hope this helps!!