A can contains a mixture of two liquids A and B in the ratio 7 : 5. When 9 litres of mixture

A can contains a mixture of two liquids A and B in the ratio 7:5. When 9 litres of mixture are drawn off and the can is filled with B, the ratio of A and B becomes 7:9. How many litres of liquid A was contained by the can initially?
A में दो तरल पदार्थ A और B का मिश्रण 7:5 के अनुपात में है। जब 9 लीटर मिश्रण निकाला जाता है और कैन को B से भर दिया जाता है, तो A और B का अनुपात 7:9 हो जाता है। आरंभ में कैन में कितने लीटर द्रव A था?
(A) 14 (B) 21(C) 28 (D) 35
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SIR how do 1/4 come from 1-3/4

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NAME question 197 MAT 19 June 2021🇳🇵

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So simple was it

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@@RevoClasses Q13. A flask is filled with 20% acid. 49 ml of that solution is taken out and is replaced with 40% acid to make it a solution of 27% acid. Find the initial volume of the solution in the flask A 140 ml B. 175 ml C. 70 ml D. 105 ml

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Kese krenge sir

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Kindly send the image of original question at 9891638566

[@subodhverma9527]

sir, which class of this question??

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SSC NTSE BANK PO..IT IS GENERAL APTITUDE QUESTION

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[@dhananjaykulkarni1674]

How 36 comes?

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Simply cross multiplying in last step

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Sir! What happens when we add 10 litre of liquid B after removal of 9 litre of mixture... Then what will be the change we get in the result? Please help sir...

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Please solve without formula

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