Question

if x:y = 5:4 and 2 :x = 3:8 find the value if y

please koi ye answer bata do exam liye bohot important hai​

Answer 1

Answer:

9:3 i hope it will useful for you

Answer 2

Answer:

$\rm \: y = \dfrac{64}{15}$

Explanation:

Given,

$\rm \: x : y = 5 : 4 \: and \: 2: x = 3 : 8$

Finding x :-

$\rm \implies \: 2: x = 3 : 8$

$\rm \implies \: \dfrac{2}{x} = \dfrac{3}{8}$

$\rm \implies \: \dfrac{2 \times 8}{3} = x$

$\rm \implies \: \dfrac{16}{3} = x$

Now,

$\rm \implies \: x : y =5 : 4$

Substituting x :-

$\rm \implies \: \dfrac{16}{3} : y =5 : 4$

$\rm \implies \: \dfrac{16}{3} \times \dfrac{1}{y} = \dfrac{5}{4}$

$\rm \implies \: \dfrac{16}{3y} = \dfrac{5}{4}$

$\rm \implies \: \dfrac{16 \times 4}{3 \times 5} = y$

$\rm \implies \: \dfrac{64}{15} = y$