Answer:
A) 2 5/12
Step-by-step explanation:
The word <u>MORE </u>refers to subtraction. If you know how to calculate fractions. Great! You should know what 2 3/4 - 1/3 equals. But if you do not:
You can use a regular calculator. Just convert everything to decimals. ( "/" means divide) 
3/4 (3÷4) = 0.75 (dont forget the 2 since is has 2 3/4) so 2.75.
1/3 (1÷3) = 0.33<u>3 </u>(underline or overline (above the number) means that number repeats. if you are using a calculator. just max the numbers out till you can put it anymore.
2.75 - 0.<u>3</u> = 2.41<u>6</u>. Now you dont know what that 416 is so just subtract the answers until it matches. 
B) 1 ÷ 12 = 0.8<u>3. </u> well it isnt 416 so that isnt right.
4 ÷ 7 = 0.571... (... means a bunch of numbers that go on and on.) again that isnt correct. Now lets try A):
5 ÷ 12 = 0.41<u>6</u>! 
Hope this helps!
~R3VO
 
        
             
        
        
        
This is not possible, unless x = 1.
        
             
        
        
        
Answer:
The Answer would be 8.
Step-by-step explanation:
I just did a quiz with this exact question 
 
        
             
        
        
        
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)
      ...(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)]
    [Using (i)]

Therefore, the combined number of cellists and violinists is 30.
 
        
             
        
        
        
Let the number be n
3*n - 10=25
3*n=25+10
3*n=35
n=35/3=11*2/3=11.67