Question

the compound ratio of 4:5 and inverse ratio of 7:5 is​

Answer 1

$\textbf{\huge{hello friend}}$

$\huge\star\underbrace{\mathtt\red{✺A}\mathtt\green{N}\mathtt\blue{S} \mathtt\purple{W}\mathtt\orange{E} \mathtt\pink{R✺}}\star$

I explained on my own so u can understand

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refer to the attachment above....

answer:

option (d) 75

Thanks