Question

Calculate the value of x if 12:16::x:28

Answer 1

Solution :

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If a:b::c:d then bc=ad

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Here,

12:16::x:28

=> 16 × x = 12 × 28

=> x = ( 12 × 28 )/16

=> x = 21

••••

Answer 2

12/16=6/8=3/4

x/28=3/4

4x=28×3

x=28×3/4

x=21