Question

4 : 4/10 :: 8 : y (Ratio and proportion)​

Answer 1

Answer:

4/10::8:20

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Answer 2

Answer:

$~~~~~\implies ~~\dfrac{4}{10} = \dfrac{8}{y}$

$~~~~~\implies ~~4y = 8×10$

$~~~~~\implies ~~y= \dfrac{80}{4}$

$~~~~~\implies ~~y= 20$

hence y=20.