Question

maries tea shop has caffeinated tea and decaffeinated tea. during the lunchtime rush, the tea shop served 10 teas in all, 30% of which were caffeinated. how many caffeinated teas did the tea shop serve?
□ caffeinated teas
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Explanation:

Step1: Convert percentage to decimal

To find 30% of a number, we first convert 30% to a decimal. 30% is equivalent to $0.3$ (since $30\%=\frac{30}{100} = 0.3$).

Step2: Multiply by total number of teas

The total number of teas served is 10. To find the number of caffeinated teas, we multiply the total number of teas by the decimal equivalent of the percentage. So we calculate $10\times0.3$.
$10\times0.3 = 3$

Answer:

3