Answer:
2 2/9 cups of sugar
Step-by-step explanation:
Cups needed to serve 9 people = 1 1/3 cups
We can say that the number of people is directly proportional to the number of cups of sugar used.
Hence, taking them in proportion :
⇒ [tex]\frac{9}{1+ 1/3} = \frac{15}{x}[/tex]
⇒ 9x = 15 (1 + 1/3)
⇒ 9x = 15 + 5
⇒ 9x = 20
⇒ x = 20/9
⇒ x = 2 2/9 cups of sugar
