<human>:  Katy makes coffee using teaspoons of sugar and cups of water in the ratio of 7:13. If she used a total of 120 teaspoons of sugar and cups of water, calculate the number of teaspoonfuls of sugar she used.
<bot>: How many teaspoons of sugar and cups of water did Katy use? ** The total ratio representing the ingredients she used to make the coffee is 7+13 = <<7+13=20>>20
How many teaspoons of sugar did Katy use? ** Since the fraction representing the number of teaspoons she used is 7/20, she used 7/20*120 = <<7/20*120=42>>42
#### 42