Given:
Violinists : Cellists = 7:3.
Number of violinists in the school orchestra = 21
To find:
The combined number of cellists and violinists.
Solution:
Let the number of violinists and cellists in the school orchestra are 7x and 3x respectively.
Then, combined number of cellists and violinists is

...(i)
Number of violinists in the school orchestra = 21

Divide both sides by 7.

Now, the combined number of cellists and violinists is
[Using (i)]

Therefore, the combined number of cellists and violinists is 30.
Answer:
1060934.37624
Step-by-step explanation:
Nice troll question
Answer
-4
Step-by-step explanation:
x^0 = 1
so -4x^0
= -4
Step-by-step explanation:
customer need to purchase each year to save money = 100/15 × $12
= 1200/15
= $80