Question : If $\frac{J}{4}=\frac{K}{5}=\frac{L}{3}$, what is the value of $(L + J)^2:(J +K)^2:(K +L)^2$?

Option 1: 25 : 16 : 9

Option 2: 64 : 25 : 81

Option 3: 49 : 81 : 62

Option 4: 49 : 81 : 64

Question : If A is the mean proportion of 24 and 6. B is the mean proportion of 81 and 9. Find the value of 3A + B.

Option 1: 33

Option 2: 32

Option 3: 63

Option 4: 55

Question : Solve: [ (144 ÷ 12) + (43 × 3) ] + 45 – 20 × 3

Option 1: 127

Option 2: 111

Option 3: 126

Option 4: 156

Question : If $x$ percent of $x$ is 256, then what is the value of $x$?

Option 1: 180

Option 2: 200

Option 3: 150

Option 4: 160

Question : If the third proportion of 3 and $x$ is 27 and the third proportion of 2 and $y$ is 8, then find $x : y$.

Option 1: 7 : 9

Option 2: 4 : 5

Option 3: 3 : 7

Option 4: 9 : 4