Question

If x : y = 5 : 4 and 2 : x = 3 : 8, find the value of y.

Answer 1

Step-by-step explanation:

2/x = 3/8

on cross multiplying we get

16= 3x

x =16/3According to the ques

x/y=5/4

on cross multiplying

4x=5y

putting the value of x

4× 16/3=5y

64/3=5y

y=64/15

Answer 2

Answer:

$\huge\dag\red{Answer}\dag$

2:x=3:8

$\Rightarrow$2/x=3/8

$\Rightarrow$16=3x {cross multiplication}

$\Rightarrow$x=16/3

x:y=5:4

$\Rightarrow$x/y=5/4

$\Rightarrow$4x=5y{cross multiplacition}

But,we know that x=16/3 because we find it above..

$\Rightarrow$4(16/3)=5y

$\Rightarrow$64/3=5y

$\Rightarrow$64/3÷5=y

$\Rightarrow$64/3×1/5=y

$\Rightarrow$64/15=y