Answer:
Givens
- The ratio of trombones to violas is 1 to 3, that is, for every trombone there are 3 violas. [tex]\frac{t}{v}=\frac{1}{3}[/tex]
So, if there are 9 violas, the number of trombones is three, because 9 violas represents a triple proportion, which means we need to multiply by 3 to find the number of trombones according to the given proportion.
[tex]\frac{t}{9}=\frac{1}{3}\\t=\frac{9}{3}\\ t=3[/tex]
The expression that gives the number of trombones is
[tex]\frac{t}{9}=\frac{1}{3}[/tex]
The number of trombones is 3, there are 3 trombones while there are 9 violas.
