If a + 5b + 9c = 24 and 5a + 3b + c = 10, what is the value of (a + b + c)?

If a + 2b + 3c = 24 and 3a + 2b + c = 36 what is the value of (a+b+c) ?

if 3a-c=5b and 3a+3b-c=40 , what is the value of b?

If (a+b): (b+c): (c+a)= 5: 6: 9 and a+b+c=10. What is the value of c :

If (a - b) = 3 , (b - c) = 5 and ( c - a) = 1 , then the value of (a^(3) + b^(3) + c^(3) - 3abc)/(a + b + c) is

If a+b+c+d = 24,a+b=c+d,a+c = 2(b+d) and a = b , what is the value of C?

The average of a, b and c is 9. The average of b and c is 10. What is the value of a? a, b तथा c का औसत 9 है | b तथा c का औसत 10 है | a का मान कितना है ?