Answer:
$8
Step-by-step explanation:
In order to find out how much she made in tips, we first need to clarify how much she was payed per hour. If we know that she makes $12 an hour, and works 11 hours, we multiply $12 by 11 hours to find out how much money she made. $12 x 11 = $132
Now to find how much of the total $140 she made is tips, we take the total amount she made (140) and subtract the amount she was payed by the hour (132). $140-$132=$8.
So Jen made $8 in tips
