Question

Given that 1:3=x:21.Find the value of x.

Answer 1

1:3 = x:21

1/3 = x/21

1/3 x 21 = x

7 = x

x = 7

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Answer 2

Answer:

ans- 7

Step-by-step explanation:

1:3= x:21

1/3 = x/21

21×1 = x×3

21 = x×3

21/3 = x

7 = x

i.e.x = 7