Question : If $p: q$ is $4: 3$ and $q: r$ is $5 : 2$. Find $p: q: r$.

Option 1: 20 : 15 : 6

Option 2: 10 : 4 : 7

Option 3: 15 : 6 : 20

Option 4: 7 : 4 : 10

Question : Z is increased successively by $11 \frac{1}{9}$% and 10% to get R. If R = 165, then what is the value of Z?

Option 1: 145

Option 2: 115

Option 3: 125

Option 4: 135

Question : The average of 21 numbers is 60. If each number is increased by 20, then find the number by which the average is increased.

Option 1: 12

Option 2: 18

Option 3: 15

Option 4: 20

Question : A number is increased by 20% and then the increased number is decreased by 20%. The net increase or decrease is:

Option 1: Decrease 2%

Option 2: Increase 4%

Option 3: Increase 2%

Option 4: Decrease 4%

Question : If p : q is 5 : 6 and q : r is 2 : 5, then what is p : q : r?

Option 1: 15 : 6 : 5

Option 2: 5 : 6 : 5

Option 3: 5 : 6 : 15

Option 4: 5 : 2 : 6