Final answer:
To find out what percentage of the teas served were caffeinated, divide the number of caffeinated teas (57) by the total number of teas served (60) and then multiply by 100 to get the percentage. The result is that 95% of the teas served were caffeinated.
Step-by-step explanation:
To calculate the percentage of caffeinated teas served at Ronald's Tea Shop, we can use the formula for percentage which is:
(Number of caffeinated teas served / Total number of teas served) × 100%
In this case, Ronald's Tea Shop served 57 caffeinated teas and 3 decaffeinated teas, so the total number of teas served is:
57 + 3 = 60 teas
Now, using the percentage formula:
(57 / 60) × 100% = 95%
Therefore, 95% of the teas served were caffeinated.