Question : If p : q : r = 2 : 5 : 3 and r : s = 6 : 5, then what is the value of p : q : r : s?

Option 1: 4 : 12 : 7 : 3

Option 2: 4 : 10 : 6 : 5

Option 3: 6 : 5 : 8 : 10

Option 4: 8 : 12 : 7 : 8

Question : If $A:B: C=2:3:4$, then what will be the value of $\frac{A}{B}:\frac{B}{C}:\frac{C}{A}$?

Option 1: $9: 5: 36$

Option 2: $8: 7: 25$

Option 3: $8: 9: 24$

Option 4: $12: 10: 13$

Question : If x : y : z = 2 : 3 : 4, then what is the value of 7x : 3y : 2z?

Option 1: $14:9:8$

Option 2: $18:7:12$

Option 3: $12:6:11$

Option 4: $16:9:8$

Question : If 2A = 3B = 7C, then what is the value of A : B : C?

Option 1: 3 : 2 : 1

Option 2: 21 : 14 : 6

Option 3: 21 : 7 : 6

Option 4: 14 : 18 : 5

Question : What is the value of [7 ÷ 14 × 8 + (5 ÷ 15 × 6 - 4 × 3)]?

Option 1: - 4

Option 2: - 2

Option 3: - 6

Option 4: - 5