Question

A person has a chemical of rs 25 per litre. In what ratio should water be mixed on that chemical so that after selling the mixture at rs 20 per litre he may get a profit of 25%

Answer 1

Hey mate ^_^

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Answer:
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Selling, price of mixture = $Rs.20$

Cost price of mixture

$= \frac{100}{125} \times 20$

$= 16$

By the rule of alligation, 

(Check this attachment)

So,

The required ratio is $16 : 9$

#Be Brainly❤️

Answer 2

hey

here is answer

Selling, price of mixture = Rs.20

Cost price of mixture 

$\begin{lgathered}= \frac{100}{125} \times 20 \\\end{lgathered}$

= 16

according to the rule of alligation, 

The ratio is 16 : 9

hope it helps

thanks