The proportion would be 1/3 and x/9. Cross multiplication creates 3x=9. Divide both sided by three, and there are 3 trombones in the orchestra.
Answer:
please show the figure of the question
it can't be answered without the figure
Step-by-step explanation:
have a great day ahead
Answer:
The answer is 148.6666667
Step-by-step explanation:
1) Set a linear quation

2) Cross multiply

3) Multiple the right side

4) Divide both side by 15

5) Solve the linear equation

7 would be the number cause;
25 ÷ 7 = 3 r4
hope that helps :D