Question

the value of x in 7:14=15: x is _____________ and 16: x :: x :4 is _____________

Answer 1

Answer:

x = 30 in 7 : 14 :: 15 : x

x = 8 in 16 : x :: x : 4

Step-by-step explanation:

7 : 14 = 15 : x

is the same as

7 : 14 :: 15 : x

We know, product of means = product of extremes

∴ 14 × 15 = 7x

⇒ x = 14 × 15/7 = 2 × 15 = 30

Similarily,

x × x = 16 × 4

⇒ $x^{2} = 84$

⇒ $x = \sqrt{64} = 8$