Question

18 Find the value of x.
a x: 5 :: 6:30
d 6:24 = 4: x
c 9: 63=x: 21
b 2 :x :: 18:54
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Answer 1

Answer:

Water is a compound because compounds are made up of different elements in fixed proportion by mass likecouse, in water molecule, hydrogen and oxygen form compound H2O in the ratio of 1. 8 by mass.Water is a compound because compounds are made up of different elements in fixed proportion by mass likecouse, in water molecule, hydrogen and oxygen form compound H2O in the ratio of 1. 8 by mass.Water is a compound because compounds are made up of different elements in fixed proportion by mass likecouse, in water molecule, hydrogen and oxygen form compound H2O in the ratio of 1. 8 by mass.Water is a compound because compounds are made up of different elements in fixed proportion by mass likecouse, in water molecule, hydrogen and oxygen form compound H2O in the ratio of 1. 8 by mass.

Answer 2

Answer:

Question:-

a x: 5 :: 6:30

d 6:24 ::4: x

c 9:63 :: x: 21

b 2 :x :: 18:54

To Find:-

value of x

Solution:-

when two ratios are in proportion their product of means = product of extremes

let's begin

a.⟹ x: 5 :: 6:30

⟹ 30x=6(5)

⟹ 30x=30

⟹ x=30/30

⟹ $\mathbb{\boxed{\purple{x=1}}\star}$

_____________________

b.⟹ 6:24 ::4: x

⟹ 6x=24*4

⟹ 6x=96

⟹ x=96/6

⟹ $\mathbb{\boxed{\orange{x=16}}\star}$

_____________________

c.⟹ 9: 63=x: 21

⟹ 9*21=63x

⟹ 189=63x

⟹ x=189/63

⟹ $\mathbb{\boxed{\pink{x=3}}\star}$

_____________________

d.⟹ 2 :x :: 18:54

⟹ 2*54=18x

⟹ 108=18x

⟹ x=108/18

⟹ $\mathbb{\boxed{\blue{x=6}}\star}$

_____________________

hope this helps.!