Question

If 7:9= y:27, then what will be the
value of y?​

Answer 1

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A] 27y = 9/3y

=27y × 3y = 9

=(3³)y × 3y = 3²

×3 y

=3²

=3

3y+y

=32

3y+y=2

∴4y=2

⇒y=1/2

Answer 2

Answer:

y= 21

Step-by-step explanation:

given => 7:9 =y:27

=> 7/9 =y/27

by cross multiplication

=> 7×27=9×y

=>7×27/9 =y

=> 7×3 =y

=> 21=y

y= 21