Question

Evan's Tea Shop has caffeinated tea and decaffeinated tea. The tea shop served 9 caffeinated teas and 6 decaffeinated teas. What percentage of the teas served were caffeinated?

Answer 1

Answer:

Step-by-step explanation:

1. 9 + 6 = 15
2. caffeinated/all types of teas = x/100 = $\frac{9}{15} = \frac{x}{100}$  
3. Cross multiply and divide to find the percentage: 9 × 100 = 900,         900 ÷ 15 = 60
4. Put 60 as the numerator: 60/100
5. Convert to percentage: 60%

You're done!

If you wanted to find the percentage of the decaffeinated teas, just subtract 60% from 100%, and you get 40%.