Question

Q9.Find the value of x in each of the following:

a) 9: x ::54 : 48

b) 18: 24 : : x : 12

c) X : 13 : : 12 :52

d) 30 : 105 : : 42 : x​

Answer 1

a) 9/x=54/48

=> x= 48×9 /54. = 48/6 = 8

b) 18/24 = x/12

=> x = 18×12 /24 = 18 /2 = 9

c) x/13 = 12/52

=> x= 12×13 /52 = 12/4 = 3.

d) 30/105 = 42/x

=> x = 42×105/30 = 42 × 21 / 6 = 7×21 = 147 .

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