If a:b=2:3 and b:c=5:7,find a:c & a:b:c

If a:b=3:5 and b:c=6:7 ,find a:b:c

If a : b = 3 : 5 and b : c = 4 : 7 , find a : b : c

If a: b= 2: 3, b: c= 4: 5 and c: d= 6: 7 , find : a: b: c:d .

(i) If 3A = 4B = 6C , find : A : B : C . (ii) If 2a = 3b and 4b = 5c , find: a : c .

If a:b:c=2:3:4, find a,b and c

If A:B=3:4 and B:C=2:3 , find A:B:C .

If A:B = 2:7 and B:C = 9:13, find A:C.

If A:B = 1:3 and B: C = 2:5. find A:C.

If a+b+c=p and ab+bc+ac=q, find a^(2)+b^(2)+c^(2) .

If a= 2, b= 3 and c= 4, find the value of : (ab + bc + ca- a^(2) -b^(2)-c^(2))/(3abc-a^(3)-b^(3)-c^(3)) , using suitable identity