If `A : B=2:3,\ B : C=4:5\ a n d\ C : D=6:7,` then `A : B : C : D` is `16 :2: 30 : 35` b. `16 : 24 : 30 : 35` c. `16 : 24 : 15 ; 35` d. `18 : 24 : 30 : 35`

If a : b=5:7\ a n d\ b : c=6: 11 , then a : b : c= (a) 35 : 49 : 66 (b) 30 : 42 : 77 (c) 30 : 42 : 55 (d) None of these

If 20 % of A=30 % of B=1/6of C , t h e n A : B : C is 2:3: 16 b. 3:2: 16 c. 10 : 15 : 18 d. 15 : 10 : 18

If A = ]2,4[ and B = [3,5[, then find A cap B

If A : B : C=2:3:4, then the ratio A/B : B/C : C/A is equal to 4:9: 16 b. 8:9: 24 c. 8:9: 12 d. 8:9: 16

If 2a + 3b + 4c = 35 and 3a + 5b + 7c = 30 , then a + b + c = _____

6, 9, 15, 21, 24, 28, 30 (a) 28 (b) 21 (c) 24 (d) 30

If A means +, B means -, C means x and D means ÷ , then 18 C 14 A 6 B 16 D 4=?

If A=]2,4[ and B=[3,5], find A nn B

The sum of four numbers , B, C and D is 110. C is twice , sum of A and D is equal to that of B and C and A:B is3:5. The numbers are 3,5,6,8 b. 15 , 25 , 30 , 40 c. 15 , 25 , 35 , 45 d. none of these