Answer:
1/6
Step-by-step explanation:
since 31/6 is 5 1/6
when she sold 10 cards, it will cover all her cost.
Profit(without charge of booth)=5x-2x
Profit=3x-30
Calculating:
3x=30
x=10
The answer is 2 not 11.6
-41
You would replace all x's with -9 and solve.