Ruby was out at a restaurant for dinner when the bill came. Her dinner came to $27. After adding in a tip, before tax, she paid $34.29. Find the percent tip.
To find the percent tip, we first need to calculate the tip amount.
The total amount Ruby paid, including the tip, is $34.29. The cost of her dinner was $27. Therefore, the tip amount is $34.29 - $27 = $7.29.
To find the percent tip, we divide the tip amount by the cost of the dinner and then multiply by 100:
Percent tip = (tip amount / cost of dinner) * 100
Percent tip = ($7.29 / $27) * 100
Percent tip = 0.2696 * 100
Percent tip ≈ 26.96%
Therefore, Ruby left a 26.96% tip.